Percentages Practice Set For MBA

1) 12.5% of 192=50% of?

48

24

6

None of these

To find 50% of a number, we can multiply the number by 0.5. In this case, we need to find a number that is 12.5% of 192. To do this, we can divide 192 by 0.125 (12.5% expressed as a decimal), which equals 1536. Now, we need to find 50% of this number. Multiplying 1536 by 0.5 gives us 768. Therefore, the correct answer is 768 and not given in the options.

Explanation

To find 50% of a number, we can multiply the number by 0.5. In this case, we need to find a number that is 12.5% of 192. To do this, we can divide 192 by 0.125 (12.5% expressed as a decimal), which equals 1536. Now, we need to find 50% of this number. Multiplying 1536 by 0.5 gives us 768. Therefore, the correct answer is 768 and not given in the options.

2) Subtracting 40% of a number:from the number, we get the result as 30. The number is:

28

52

50

70

If we subtract 40% of a number from the number itself and the result is 30, it means that 60% of the number is equal to 30. To find the original number, we can set up the equation 0.6x = 30, where x represents the number. By dividing both sides of the equation by 0.6, we find that x = 50. Therefore, the number is 50.

Explanation

If we subtract 40% of a number from the number itself and the result is 30, it means that 60% of the number is equal to 30. To find the original number, we can set up the equation 0.6x = 30, where x represents the number. By dividing both sides of the equation by 0.6, we find that x = 50. Therefore, the number is 50.

3) If A = x% of y and B = y% of x, then which of the following is true?

A is smaller than B

A is greater than B

Cannot be determined

None of these

The statement "None of these" is the correct answer because A and B are equal. This can be proven by substituting values for x and y. For example, let's say x = 10 and y = 20. In this case, A would be 10% of 20 which is 2, and B would be 20% of 10 which is also 2. Therefore, A is not smaller or greater than B, and it can be determined that the answer is none of these options.

Explanation

The statement "None of these" is the correct answer because A and B are equal. This can be proven by substituting values for x and y. For example, let's say x = 10 and y = 20. In this case, A would be 10% of 20 which is 2, and B would be 20% of 10 which is also 2. Therefore, A is not smaller or greater than B, and it can be determined that the answer is none of these options.

4) In an election contested by two parties, Party D secured 12% of the total votes more than Party R. If party R got 132,000 votes, by how many votes did it lose the election?

240,000

300,000

168,000

36,000

Party R got 132,000 votes. Party D secured 12% more votes than Party R. To find the number of votes Party D secured, we calculate 12% of 132,000, which is 15,840. Therefore, Party D secured 132,000 + 15,840 = 147,840 votes. To find the number of votes Party R lost the election by, we subtract Party R's votes from Party D's votes: 147,840 - 132,000 = 15,840. Therefore, Party R lost the election by 15,840 votes.

Explanation

Party R got 132,000 votes. Party D secured 12% more votes than Party R. To find the number of votes Party D secured, we calculate 12% of 132,000, which is 15,840. Therefore, Party D secured 132,000 + 15,840 = 147,840 votes. To find the number of votes Party R lost the election by, we subtract Party R's votes from Party D's votes: 147,840 - 132,000 = 15,840. Therefore, Party R lost the election by 15,840 votes.

5) In a certain school, 20% of students are below 8 years of age. The number of students above 8 years of age is equal to the number of students of 8 years of age which is 48. What is the total number of students in the school?

80

120

150

100

Let the total number of students in the school be x. Since 20% of students are below 8 years of age, the number of students below 8 years of age is 0.2x. The number of students above 8 years of age is equal to the number of students of 8 years of age, which is 48. So, 0.2x + 48 + 48 = x. Solving this equation, we get x = 100. Therefore, the total number of students in the school is 100.

Explanation

Let the total number of students in the school be x. Since 20% of students are below 8 years of age, the number of students below 8 years of age is 0.2x. The number of students above 8 years of age is equal to the number of students of 8 years of age, which is 48. So, 0.2x + 48 + 48 = x. Solving this equation, we get x = 100. Therefore, the total number of students in the school is 100.