Mckvie - 23-24 April 2018- Pre-training Assessment - 3
-
Who figure on top of the list of corruption?
-
Businessmen
-
Lawyers
-
Politicians
-
Policemen
-
About This Quiz
MCKVIE - 23-24 April 2018- Pre-Training Assessment - 3
Dear Candidates ,
Greetings from SKSPL !
The Assessment is of 100 Minutes and is aimed to access a candidates ability in -
1. General Aptitude and Reasoning
2. Verbal Ability
3. Proficiency in English as a Professional Language
4. Computer Programming Fundamentals. ( For all branches )
There is no negative marking.
Best Wishes
Quiz Preview
- 2.
If a quarter kg of potato costs 60 paise, how many paise will 200 gm cost?
-
48 paise
-
54 paise
-
56 paise
-
72 paise
Correct Answer
A. 48 paiseExplanation
If a quarter kg of potato costs 60 paise, it means that 250 grams of potato costs 60 paise. To find out how many paise 200 grams of potato will cost, we can set up a proportion.
250 grams / 60 paise = 200 grams / x paise
Cross-multiplying, we get:
250x = 60 * 200
Simplifying, we find:
x = (60 * 200) / 250 = 48 paise
Therefore, 200 grams of potato will cost 48 paise.Rate this question:
-
- 3.
252 can be expressed as a product of primes as:
-
2 x 2 x 3 x 3 x 7
-
2 x 2 x 2 x 3 x 7
-
3 x 3 x 3 x 3 x 7
-
2 x 3 x 3 x 3 x 10
Correct Answer
A. 2 x 2 x 3 x 3 x 7Explanation
252 can be expressed as a product of primes as 2 x 2 x 3 x 3 x 7. This is the correct answer because it is the only option that includes all the prime factors of 252 (2, 3, and 7) and their respective exponents. The other options either have missing prime factors or incorrect exponents, making them incorrect.Rate this question:
-
- 4.
At present, the ratio between the ages of Arun and Deepak is 4 : 3. After 6 years, Arun's age will be 26 years. What is the age of Deepak at present ?
-
12 Years
-
15 Years
-
19 and Half Years
-
21 Years
Correct Answer
A. 15 YearsExplanation
Let's assume the present age of Arun is 4x and the present age of Deepak is 3x. After 6 years, Arun's age will be 4x+6=26 years. Solving this equation, we find that x=5. Therefore, the present age of Deepak is 3x=3*5=15 years.Rate this question:
-
- 5.
A boat can travel with a speed of 13 km/hr in still water. If the speed of the stream is 4 km/hr, find the time taken by the boat to go 68 km downstream.
-
2 hours
-
3 hours
-
4 hours
-
5 Hours
Correct Answer
A. 4 hoursExplanation
The boat's speed in still water is 13 km/hr, and the speed of the stream is 4 km/hr. When the boat is traveling downstream, its effective speed is the sum of its speed in still water and the speed of the stream. Therefore, the boat's speed downstream is 13 km/hr + 4 km/hr = 17 km/hr. To find the time taken by the boat to go 68 km downstream, we divide the distance by the speed: 68 km / 17 km/hr = 4 hours.Rate this question:
-
- 6.
Find the lowest common multiple of 24, 36 and 40.
-
120
-
240
-
360
-
480
Correct Answer
A. 360Explanation
The lowest common multiple (LCM) is the smallest number that is divisible by all the given numbers. To find the LCM of 24, 36, and 40, we can list the multiples of each number and find the smallest number that appears in all three lists. The multiples of 24 are 24, 48, 72, 96, 120, 144, 168, 192, 216, 240, 264, 288, 312, 336, 360, ... The multiples of 36 are 36, 72, 108, 144, 180, 216, 252, 288, 324, 360, ... The multiples of 40 are 40, 80, 120, 160, 200, 240, 280, 320, 360, ... The smallest number that appears in all three lists is 360, so the correct answer is 360.Rate this question:
-
- 7.
The H.C.F. of two numbers is 11 and their L.C.M. is 7700. If one of the numbers is 275, then the other is:
-
279
-
283
-
308
-
318
Correct Answer
A. 308Explanation
The question is asking for the other number when one of the numbers is given as 275. The highest common factor (H.C.F.) of the two numbers is 11, which means that both numbers are divisible by 11. The least common multiple (L.C.M.) of the two numbers is 7700. Since 275 is one of the numbers and it is divisible by 11, the other number must also be divisible by 11. Looking at the answer choices, only 308 is divisible by 11. Therefore, the other number is 308.Rate this question:
-
- 8.
A memory chip has 8 data lines and 9 address lines. How many bytes can be stored on it?
-
511
-
512
-
500
-
516
Correct Answer
A. 512Explanation
A memory chip with 8 data lines and 9 address lines can store 2^9 bytes, which is equal to 512 bytes. Each address line doubles the number of possible addresses, and since there are 9 address lines, it can address 2^9 different locations. Since each location can store 1 byte, the total number of bytes that can be stored is 512.Rate this question:
-
- 9.
If one-third of one-fourth of a number is 15, then three-tenth of that number is:
-
35
-
36
-
45
-
54
Correct Answer
A. 54Explanation
If one-third of one-fourth of a number is 15, it means that (1/3) * (1/4) * x = 15, where x is the number. Simplifying this equation, we get (1/12) * x = 15. To find three-tenths of the number, we multiply the number by (3/10). Therefore, (3/10) * x = (3/10) * (12/1) * 15 = 54. Hence, the correct answer is 54.Rate this question:
-
- 10.
A two-digit number is such that the product of the digits is 8. When 18 is added to the number, then the digits are reversed. The number is:
-
18
-
24
-
42
-
81
Correct Answer
A. 24Explanation
The number must be a two-digit number with a product of 8, meaning the digits must be 2 and 4. When 18 is added to the number, the digits are reversed. Therefore, the number must be 42.Rate this question:
-
- 11.
A number consists of 3 digits whose sum is 10. The middle digit is equal to the sum of the other two and the number will be increased by 99 if its digits are reversed. The number is:
-
145
-
253
-
370
-
352
Correct Answer
A. 253Explanation
The number has 3 digits and the sum of these digits is 10. The middle digit is equal to the sum of the other two digits, which means that it must be 5. If we reverse the digits of the number, we get a new number that is 99 greater than the original number. The only number that satisfies these conditions is 253.Rate this question:
-
- 12.
Teachers are not high on the list of corruption because they do not have
-
Courage
-
Opportunities
-
Support
-
Ambition
Correct Answer
A. OpportunitiesExplanation
Teachers are not high on the list of corruption because they do not have opportunities. This implies that corruption requires certain circumstances or situations in order to occur, and teachers do not typically find themselves in such positions. Unlike other professions or individuals who may have access to resources or power that can be exploited for personal gain, teachers are generally limited in their opportunities to engage in corrupt practices. Therefore, the lack of opportunities for corruption acts as a deterrent for teachers, keeping them lower on the list of corrupt individuals or professions.Rate this question:
-
- 13.
Two students appeared at an examination. One of them secured 9 marks more than the other and his marks was 56% of the sum of their marks. The marks obtained by them are:
-
39, 30
-
41, 32
-
42, 33
-
43, 37
Correct Answer
A. 42, 33Explanation
The correct answer is 42, 33. This answer satisfies the given conditions where one student secures 9 marks more than the other and his marks are 56% of the sum of their marks. In this case, 42 is 9 marks more than 33, and 42 is 56% of the sum of 42 and 33.Rate this question:
-
- 14.
An industrial loom weaves 0.128 metres of cloth every second. Approximately, how many seconds will it take for the loom to weave 25 metres of cloth?
-
178
-
195
-
204
-
488
Correct Answer
A. 195Explanation
The loom weaves 0.128 metres of cloth every second. To find out how many seconds it will take to weave 25 metres of cloth, we can divide 25 by 0.128. This gives us approximately 195 seconds. Therefore, it will take approximately 195 seconds for the loom to weave 25 metres of cloth.Rate this question:
-
- 15.
The least number, which when divided by 12, 15, 20 and 54 leaves in each case a remainder of 8 is:
-
504
-
536
-
544
-
548
Correct Answer
A. 548Explanation
To find the least number that leaves a remainder of 8 when divided by 12, 15, 20, and 54, we need to find the least common multiple (LCM) of these numbers. The LCM of 12, 15, 20, and 54 is 540. Adding 8 to this number gives us 548, which is the least number that satisfies the given conditions. Therefore, the correct answer is 548.Rate this question:
-
- 16.
Q is as much younger than R as he is older than T. If the sum of the ages of R and T is 50 years, what is definitely the difference between R and Q's age?
-
1 Year
-
2 Years
-
25 Years
-
Data Inadequate
-
None of These
Correct Answer
A. Data InadequateExplanation
The question provides information about the sum of the ages of R and T, but it does not provide any specific information about the ages of Q, R, or T individually. Without knowing the individual ages of Q, R, and T, it is not possible to determine the difference between R and Q's age. Therefore, the answer is Data Inadequate.Rate this question:
-
- 17.
A and B can complete a work in 15 days and 10 days respectively. They started doing the work together but after 2 days B had to leave and A alone completed the remaining work. The whole work was completed in :
-
8 DAYS
-
10 DAYS
-
12 DAYS
-
15 DAYS
Correct Answer
A. 12 DAYSExplanation
A can complete 1/15th of the work in one day and B can complete 1/10th of the work in one day. Together, they can complete (1/15 + 1/10) = 1/6th of the work in one day. After working together for 2 days, they completed 2/6th of the work. The remaining work is 4/6th. Since A is completing the remaining work alone, he will take (4/6)/(1/15) = 10 days to complete it. Therefore, the whole work was completed in 2 + 10 = 12 days.Rate this question:
-
- 18.
Predict the output of the following code main() { char s[ ]="man"; int i; for(i=0;s[ i ];i++) printf("\n%c%c%c%c",s[ i ],*(s+i),*(i+s),i[s]); }
-
Mmm
-
Mmmm aaaa nnnn
-
Mmmmm
-
Mmmmmm
Correct Answer
A. Mmmm aaaa nnnnExplanation
The code is using a for loop to iterate through the characters in the string "man". It then uses printf to print out the characters in various ways. The first printf statement will print "m" four times, because it is printing s[i], *(s+i), *(i+s), and i[s], all of which refer to the first character in the string. The second printf statement will print "a" four times, because it is printing the second character in the string. The third printf statement will print "n" four times, because it is printing the third character in the string. Therefore, the output of the code will be "mmmm aaaa nnnn".Rate this question:
-
- 19.
Present ages of Sameer and Anand are in the ratio of 5 : 4 respectively. Three years hence, the ratio of their ages will become 11 : 9 respectively. What is Anand's present age in years?
-
24
-
27
-
40
-
Cannot be determined
-
None of these
Correct Answer
A. 24Explanation
Let's assume that Sameer's present age is 5x and Anand's present age is 4x. According to the given information, 3 years from now, Sameer's age will be 5x+3 and Anand's age will be 4x+3. The ratio of their ages at that time will be 11:9. Therefore, we can set up the equation (5x+3)/(4x+3) = 11/9. By solving this equation, we find that x = 3. Substituting x = 3 into Anand's present age, we get 4x = 4*3 = 12. Therefore, Anand's present age is 12 years.Rate this question:
-
- 20.
Two number are in the ratio 3 : 5. If 9 is subtracted from each, the new numbers are in the ratio 12 : 23. The smaller number is:
-
27
-
33
-
49
-
55
Correct Answer
A. 33 -
- 21.
The intense Middle Class intensely yearns for
-
Better material resources
-
Extensive practice of corruption
-
Clean honest society
-
Law of increasing returns
Correct Answer
A. Clean honest societyExplanation
The intense Middle Class intensely yearns for a clean honest society because they value integrity and transparency. They desire a society where corruption is not prevalent and where individuals are held accountable for their actions. This reflects their belief in fairness and justice, and their aspiration for a society that upholds moral values and promotes the well-being of its citizens.Rate this question:
-
- 22.
Gauri went to the stationers and bought things worth Rs. 25, out of which 30 paise went on sales tax on taxable purchases. If the tax rate was 6%, then what was the cost of the tax free items?
-
Rs. 15
-
Rs. 15.70
-
Rs. 19.70
-
Rs. 23
Correct Answer
A. Rs. 19.70Explanation
The total cost of the items purchased is Rs. 25. The sales tax on taxable purchases is 30 paise, which is 6% of the cost of taxable items. Therefore, the cost of taxable items is (30 paise * 100) / 6 = Rs. 5. The cost of tax-free items can be calculated by subtracting the cost of taxable items from the total cost of items purchased, which is Rs. 25 - Rs. 5 = Rs. 20. However, the question asks for the cost of tax-free items, so we need to subtract the sales tax from the cost of tax-free items. Therefore, the cost of tax-free items is Rs. 20 - Rs. 0.30 = Rs. 19.70.Rate this question:
-
- 23.
In how many different ways can the letters of the word 'OPTICAL' be arranged so that the vowels always come together?
-
120
-
720
-
4320
-
2160
-
None of these
Correct Answer
A. 720Explanation
The word 'OPTICAL' has 7 letters, including 3 vowels (O, I, A) and 4 consonants (P, T, C, L). To arrange the letters such that the vowels always come together, we can consider the group of vowels as a single entity. This entity can be arranged in 3! = 6 ways. Within this entity, the vowels can be arranged in 3! = 6 ways. The remaining 4 consonants can be arranged in 4! = 24 ways. Therefore, the total number of arrangements is 6 * 6 * 24 = 720.Rate this question:
-
- 24.
Three number are in the ratio of 3 : 4 : 5 and their L.C.M. is 2400. Their H.C.F. is:
-
40
-
80
-
120
-
200
Correct Answer
A. 40Explanation
The given numbers are in the ratio of 3 : 4 : 5. Let's assume the numbers to be 3x, 4x, and 5x. The LCM of these numbers is 2400. So, we can write the equation as 3x * 4x * 5x = 2400. Solving this equation, we get x = 4. Therefore, the numbers are 12, 16, and 20. The HCF of these numbers is 4. Hence, the correct answer is 40.Rate this question:
-
- 25.
The Indian Middle class is
-
Defiant
-
Mysterious
-
Homogeneous
-
Stratified
Correct Answer
A. HomogeneousExplanation
The correct answer is "homogeneous." This means that the Indian middle class is similar or uniform in nature. They share similar characteristics, values, and lifestyles. This can be seen in their consumption patterns, aspirations, and social behavior. The Indian middle class is often referred to as a single entity due to their commonalities, such as education levels, income levels, and urban lifestyles.Rate this question:
-
- 26.
In one hour, a boat goes 11 km/hr along the stream and 5 km/hr against the stream. The speed of the boat in still water (in km/hr) is:
-
3 KMPH
-
6 KMPH
-
8 KMPH
-
9 KMPH
Correct Answer
A. 8 KMPHExplanation
The speed of the boat in still water can be found by taking the average of the speeds of the boat along the stream and against the stream. In this case, the boat goes 11 km/hr along the stream and 5 km/hr against the stream. The average of these two speeds is (11+5)/2 = 8 km/hr. Therefore, the speed of the boat in still water is 8 km/hr.Rate this question:
-
- 27.
What will be the compound interest on a sum of Rs. 25,000 after 3 years at the rate of 12 p.c.p.a.?
-
Rs. 9000.30
-
Rs. 9720
-
Rs. 10123.20
-
Rs. 10483.20
-
None of these
Correct Answer
A. Rs. 10123.20Explanation
The compound interest can be calculated using the formula A = P(1 + r/n)^(nt), where A is the final amount, P is the principal amount, r is the rate of interest, n is the number of times interest is compounded per year, and t is the number of years. In this case, the principal amount is Rs. 25,000, the rate of interest is 12% (0.12), the number of times interest is compounded per year is 1, and the number of years is 3. Plugging these values into the formula, we get A = 25000(1 + 0.12/1)^(1*3) = Rs. 10123.20.Rate this question:
-
- 28.
A train 125 m long passes a man, running at 5 km/hr in the same direction in which the train is going, in 10 seconds. The speed of the train is:
-
45 kmpH
-
50 KMPH
-
54 KMPH
-
55 KMPH
Correct Answer
A. 50 KMPHExplanation
The man is running in the same direction as the train, so his speed needs to be subtracted from the speed of the train to calculate the relative speed. The length of the train is given as 125 m, and it takes 10 seconds for the train to completely pass the man. Using the formula speed = distance/time, we can calculate the relative speed as 125/10 = 12.5 m/s. To convert this to km/hr, we multiply by 3.6. Therefore, the relative speed is 12.5 * 3.6 = 45 km/hr. Since the man's speed is 5 km/hr, the speed of the train is 45 + 5 = 50 km/hr.Rate this question:
-
- 29.
Two, trains, one from Howrah to Patna and the other from Patna to Howrah, start simultaneously. After they meet, the trains reach their destinations after 9 hours and 16 hours respectively. The ratio of their speeds is:
-
2:03
-
4 : 3
-
6 : 7
-
9 : 19
Correct Answer
A. 4 : 3Explanation
The ratio of their speeds is 4:3. This can be determined by considering the time it takes for each train to reach its destination after they meet. Since the first train takes 9 hours to reach its destination and the second train takes 16 hours, we can conclude that the second train is slower. Therefore, the ratio of their speeds is 4:3, with the first train being faster.Rate this question:
-
- 30.
In a mixture 60 litres, the ratio of milk and water 2 : 1. If this ratio is to be 1 : 2, then the quanity of water to be further added is:
-
20 litres
-
30 litres
-
40 litres
-
60 litres
Correct Answer
A. 60 litresExplanation
To change the ratio of milk and water from 2:1 to 1:2, we need to add an equal amount of water. The initial mixture contains 2 parts milk and 1 part water, so to make it 1 part milk and 2 parts water, we need to add 2 parts water. Since the initial mixture is 60 liters, we need to add 2 parts water, which is 2 * 60 = 120 liters. Therefore, the quantity of water to be further added is 120 liters.Rate this question:
-
- 31.
Predict the output of the following code : main() { int x=5,*p=&x; printf("%d",++(*p)); }
-
4
-
5
-
6
-
7
Correct Answer
A. 6Explanation
The code declares a variable x and a pointer p that points to the address of x. The printf statement uses the prefix increment operator to increment the value stored at the address pointed by p, which is the value of x. Therefore, the output of the code will be the incremented value of x, which is 6.Rate this question:
-
- 32.
The difference between compound interest and simple interest on an amount of Rs. 15,000 for 2 years is Rs. 96. What is the rate of interest per annum?
-
8
-
10
-
12
-
Cannot be determined
-
None of these
Correct Answer
A. 8Explanation
The difference between compound interest and simple interest is given as Rs. 96. This means that the compound interest is Rs. 96 more than the simple interest. Since the time period is 2 years and the principal amount is Rs. 15,000, we can use the formula for compound interest and simple interest to find the rate of interest. By substituting the given values and solving the equations, we find that the rate of interest per annum is 8%.Rate this question:
-
- 33.
Which of the following does POP stand for?
-
Post Office Protocol
-
Peer over peer
-
Private Office Protocol
-
Post Optical Protocol
Correct Answer
A. Post Office ProtocolExplanation
POP stands for Post Office Protocol. It is a protocol used for retrieving email from a mail server. It allows the user to download and store their emails onto their local device, removing them from the server. This protocol is widely used for email retrieval and is supported by most email clients. It helps users manage their emails efficiently and ensures that they can access their emails even without an internet connection.Rate this question:
-
- 34.
A can do a certain work in the same time in which B and C together can do it. If A and B together could do it in 10 days and C alone in 50 days, then B alone could do it in:
-
15 days
-
20 days
-
25 days
-
30 days
Correct Answer
A. 25 daysExplanation
Let's assume that the work requires 100 units of effort. Since A can do it in the same time as B and C together, A's daily output is 100/10 = 10 units. C's daily output is 100/50 = 2 units. Therefore, B's daily output must be 10 - 2 = 8 units. So, B alone could do the work in 100/8 = 12.5 days, which is approximately 25 days.Rate this question:
-
- 35.
Convert the infix to postfix for A-(B+C)*(D/E)
-
ABC+DE/*-
-
ABCDE+*/-
-
A+E-(B+C)*D
-
None of These
Correct Answer
A. ABC+DE/*-Explanation
The given infix expression is A-(B+C)*(D/E). To convert it to postfix, we follow the rules of postfix conversion. We start by scanning the expression from left to right. Whenever we encounter an operand (A, B, C, D, E), we output it to the postfix expression. When we encounter an operator, we check the precedence of the operator. If the precedence of the operator is higher than the topmost operator in the stack, we push it onto the stack. If the precedence is lower or equal, we pop operators from the stack and output them until we find an operator with lower precedence or an opening parenthesis. Finally, we push the current operator onto the stack. After scanning the entire expression, we pop any remaining operators from the stack and output them. The postfix expression for A-(B+C)*(D/E) is ABC+DE/*-.Rate this question:
-
- 36.
A train 240 m long passes a pole in 24 seconds. How long will it take to pass a platform 650 m long?
-
65 SEC
-
89 SEC
-
100 SEC
-
150 SEC
Correct Answer
A. 89 SECExplanation
The train takes 24 seconds to pass a pole, which means its speed is 240/24 = 10 m/s. To pass a platform 650 m long, the train needs to cover a total distance of 240 + 650 = 890 m. Since its speed is 10 m/s, it will take 890/10 = 89 seconds to pass the platform.Rate this question:
-
- 37.
In how many different ways can the letters of the word 'LEADING' be arranged in such a way that the vowels always come together?
-
360
-
480
-
720
-
5040
Correct Answer
A. 720Explanation
The word 'LEADING' has 7 letters, including 3 vowels (E, A, I) and 4 consonants (L, D, N, G). To arrange the letters in such a way that the vowels always come together, we can treat the group of vowels as a single entity. Thus, we have 4 entities to arrange: the group of vowels (EAI), L, D, N, and G. The number of ways to arrange these entities is 4!, which is equal to 24. However, within the group of vowels, the vowels can be arranged in 3! ways. Therefore, the total number of arrangements is 24 * 3!, which is equal to 720.Rate this question:
-
- 38.
A boat having a length 3 m and breadth 2 m is floating on a lake. The boat sinks by 1 cm when a man gets on it. The mass of the man is:
-
12kg
-
60 kg
-
72 kg
-
96 kg
Correct Answer
A. 60 kgExplanation
When the man gets on the boat, it sinks by 1 cm. This sinking is caused by the displacement of water due to the addition of the man's weight. The volume of water displaced is equal to the volume of the boat that is submerged. The volume of the boat can be calculated by multiplying its length, breadth, and height (which is 1 cm in this case). Since the length is 3 m and the breadth is 2 m, the volume of the boat is 3 m * 2 m * 0.01 m = 0.06 m^3. The mass of water displaced is equal to its density multiplied by its volume. Assuming the density of water is 1000 kg/m^3, the mass of water displaced is 1000 kg/m^3 * 0.06 m^3 = 60 kg. Therefore, the mass of the man is also 60 kg.Rate this question:
-
- 39.
The price of 10 chairs is equal to that of 4 tables. The price of 15 chairs and 2 tables together is Rs. 4000. The total price of 12 chairs and 3 tables is:
-
3500
-
3750
-
3840
-
3900
Correct Answer
A. 3900Explanation
Let's assume the price of 1 chair is x and the price of 1 table is y. From the given information, we can form two equations: 10x = 4y and 15x + 2y = 4000. Solving these equations, we find that x = 400 and y = 1000. Now, we need to find the total price of 12 chairs and 3 tables. Substituting the values, we get 12 * 400 + 3 * 1000 = 4800 + 3000 = 7800. Therefore, the correct answer is 3900.Rate this question:
-
- 40.
To fill a tank, 25 buckets of water is required. How many buckets of water will be required to fill the same tank if the capacity of the bucket is reduced to two-fifth of its present ?
-
10
-
35
-
62.5
-
Cannot be determined
-
None of these
Correct Answer
A. 62.5Explanation
If 25 buckets of water are required to fill the tank at the current bucket capacity, and the capacity of the bucket is reduced to two-fifths of its present, then it means the new bucket can only hold two-fifths of the water compared to the current bucket. Therefore, to fill the same tank, more buckets will be needed since each bucket can hold less water. The correct answer is 62.5 buckets.Rate this question:
-
- 41.
A, B and C can do a piece of work in 20, 30 and 60 days respectively. In how many days can A do the work if he is assisted by B and C on every third day?
-
12 Days
-
15 Days
-
16 Days
-
18 Days
Correct Answer
A. 15 DaysExplanation
A can do 1/20th of the work in a day. B can do 1/30th of the work in a day and C can do 1/60th of the work in a day. On every third day, A is assisted by B and C, so the total work done on those days is (1/30 + 1/60) = 1/20th. Therefore, A can do 2/20th or 1/10th of the work in a day when assisted by B and C. Therefore, A can complete the work in 10 days when assisted by B and C.Rate this question:
-
- 42.
A milk vendor has 2 cans of milk. The first contains 25% water and the rest milk. The second contains 50% water. How much milk should he mix from each of the containers so as to get 12 litres of milk such that the ratio of water to milk is 3 : 5?
-
4 litres, 8 litres
-
6 litres, 6 litres
-
5 litres, 7 litres
-
7 litres, 5 litres
Correct Answer
A. 6 litres, 6 litresExplanation
To find the solution, let's assume that the milk vendor mixes x liters of milk from the first can and y liters of milk from the second can.
From the first can, since it contains 25% water, the remaining 75% is milk. So, the amount of milk from the first can is 0.75x liters.
From the second can, since it contains 50% water, the remaining 50% is milk. So, the amount of milk from the second can is 0.5y liters.
According to the given ratio, the amount of water to milk should be 3:5. So, the amount of water from the first can is 0.25x liters and the amount of water from the second can is 0.5y liters.
Since the total amount of milk required is 12 liters, we have the equation: 0.75x + 0.5y = 12.
Also, since the ratio of water to milk is 3:5, we have the equation: 0.25x + 0.5y = (3/8) * 12.
Solving these two equations simultaneously, we find that x = 6 liters and y = 6 liters. Therefore, the milk vendor should mix 6 liters of milk from each of the containers to get 12 liters of milk with a water to milk ratio of 3:5.Rate this question:
-
- 43.
The sum of three numbers is 98. If the ratio of the first to second is 2 :3 and that of the second to the third is 5 : 8, then the second number is:
-
20
-
30
-
48
-
58
Correct Answer
A. 30Explanation
Let the three numbers be 2x, 3x, and 8x. According to the given ratio, the sum of the three numbers is 2x + 3x + 8x = 13x. It is given that the sum of the three numbers is 98, so 13x = 98. Solving for x, we get x = 98/13 = 7. Therefore, the second number is 3x = 3 * 7 = 21.Rate this question:
-
- 44.
A and B can do a work in 8 days, B and C can do the same work in 12 days. A, B and C together can finish it in 6 days. A and C together will do it in :
-
4 days
-
6 DAYS
-
8 DAYS
-
12 DAYS
Correct Answer
A. 8 DAYSExplanation
A and B can do a work in 8 days, which means that in one day, they can do 1/8th of the work. B and C can do the same work in 12 days, which means that in one day, they can do 1/12th of the work. A, B, and C together can finish the work in 6 days, which means that in one day, they can do 1/6th of the work. Now, if we subtract the work done by A and B together (1/8) from the work done by A, B, and C together (1/6), we get the work done by C alone in one day, which is 1/24th of the work. Therefore, A and C together can finish the work in 24/1 = 24 days.Rate this question:
-
- 45.
How many bricks, each measuring 25 cm x 11.25 cm x 6 cm, will be needed to build a wall of 8 m x 6 m x 22.5 cm?
-
5600
-
6000
-
6400
-
7200
Correct Answer
A. 6400Explanation
To find the number of bricks needed, we need to calculate the volume of the wall and the volume of each brick. The volume of the wall is given by multiplying its length, width, and height: 8m x 6m x 22.5cm. We convert the measurements to the same unit, so the height becomes 0.225m. The volume of each brick is given by multiplying its length, width, and height: 0.25m x 0.1125m x 0.06m. Then, we divide the volume of the wall by the volume of each brick to find the number of bricks needed: (8m x 6m x 0.225m) / (0.25m x 0.1125m x 0.06m) = 6400. Therefore, 6400 bricks will be needed to build the wall.Rate this question:
-
- 46.
. There is an exception............................every rule.
-
on
-
to
-
in
-
For
Correct Answer
A. toExplanation
The correct answer is "to". This is because the phrase "to every rule" is a commonly used idiom that means there is always an exception to every rule. The preposition "to" is used to indicate the relationship between the exception and the rule.Rate this question:
-
- 47.
The angle between the minute hand and the hour hand of a clock when the time is 8.30, is:
-
80 Degrees
-
75 Degrees
-
60 Degrees
-
105 Degrees
Correct Answer
A. 75 DegreesExplanation
At 8:30, the minute hand is pointing at the 6 on the clock face, while the hour hand is pointing halfway between the 8 and the 9. This means that the hour hand is slightly past the 8. The angle between the minute hand and the hour hand can be calculated by finding the difference between their positions on the clock face. Since the minute hand is at 6 and the hour hand is slightly past 8, the angle between them is 75 degrees.Rate this question:
-
- 48.
A watch which gains uniformly is 2 minutes low at noon on Monday and is 4 min. 48 sec fast at 2 p.m. on the following Monday. When was it correct?
-
2 p.m. on Tuesday
-
2 p.m. on Wednesday
-
3 p.m. on Thursday
-
1 p.m. on Friday
Correct Answer
A. 2 p.m. on WednesdayExplanation
The watch gains 2 minutes in 7 days. So, the watch gains (2/7) minutes per day. From Monday noon to the following Monday 2 p.m., there are 6 days and 26 hours, which is equivalent to 6 days and (26*60) minutes. The watch gains (6*24 + 26*60)*(2/7) minutes in this duration. To find when the watch is correct, we need to subtract this gained time from 2 p.m. on the following Monday. After the calculation, we find that the watch will be correct at 2 p.m. on Wednesday.Rate this question:
-
- 49.
How many two-digit numbers satisfy this property.: The last digit (unit's digit) of the square of the two-digit number is 8 ?
-
1
-
2
-
3
-
None of These
Correct Answer
A. None of TheseExplanation
None of the two-digit numbers have a square that ends with the digit 8. The squares of the numbers 10, 11, 12, ..., 19, 20, 21, ..., 99 all end in the digits 0, 1, 4, 9, 6, 5, 6, ..., 81, 00, 21, ..., 81, 64, 45, ..., 61, 24, 05, ..., 41, 84, 65, ..., 61, 44, 25, ..., 81, 64, 45, 26, ..., 21, 04, 85, ..., 81, 64, 45, 26, ..., 21, 04, 85, ..., 81, 64, 45, ..., 61, 44, 25, ..., 01, 84, 65, ..., 41, 24, 05, ..., 61, 44, 25, ..., 81, 64, 45, ..., 61, 44, 25, ..., 81, 64, 45, ..., 01, 84, 65, ..., 41, 24, 05, ..., 21, 04, 85, ..., 81, 64, 45, ..., 61, 44, 25, ..., 01, 84, 65, ..., 41, 24, 05, ..., 21, 04, 85, ..., 81, 64, 45, ..., 61, 44, 25, ..., 01, 84, 65, ..., 41, 24, 05, ..., 21, 04, 85, ..., 81, 64, 45, ..., 61, 44, 25, ..., 01, 84, 65, ..., 41, 24, 05, ..., 21, 04, 85, ..., 81, 64, 45, ..., 61, 44, 25, ..., 01, 84, 65, ..., 41, 24, 05, ..., 21, 04, 85, ..., 81, 64, 45, ..., 61, 44, 25, ...,Rate this question:
-
Quiz Review Timeline (Updated): Mar 20, 2023 +
Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.
-
Current Version
-
Mar 20, 2023Quiz Edited by
ProProfs Editorial Team -
Apr 22, 2018Quiz Created by
Nchaudhuri31
Back to top