Review: Social Arithmetic, Lines, And Angles
Dear Year 7,
Please take this quiz for the review of our learning term 3.
You may use a calculator, open books, or other resources. Thank you
Good luck
- 1.
If Sell price is greater than Cost price then the seller is said to have profit or gain.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
If the sell price is greater than the cost price, it means that the seller is able to sell the product for a higher price than what they initially paid for it. This results in a profit or gain for the seller. Therefore, the statement is true.Rate this question:
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- 2.
The selling price of camera is Rp2,200,000.00, the seller has made 10% profit. The buying price of the camera is ...
- A.
1.900.000,-
- B.
2.000.000,-
- C.
1.980.000,-
- D.
2.420.000,-
Correct Answer
B. 2.000.000,-Explanation
The selling price of the camera is Rp2,200,000.00 and the seller has made a 10% profit. To find the buying price, we need to subtract the profit from the selling price. 10% of Rp2,200,000 is Rp220,000. Subtracting this profit from the selling price gives us Rp2,200,000 - Rp220,000 = Rp1,980,000. Therefore, the buying price of the camera is Rp1,980,000.Rate this question:
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- 3.
The buying price of a loaf of bread is Rp5,000.00. The bread is sold with 15% profit. The selling price of 100 loaves of bread is ....
- A.
Rp625,000.00
- B.
Rp500,000.00
- C.
Rp575,000.00
- D.
Rp425,000.00
Correct Answer
C. Rp575,000.00Explanation
The selling price of 100 loaves of bread can be calculated by adding the 15% profit to the buying price of each loaf. The profit for each loaf is 15% of Rp5,000.00, which is Rp750.00. So, the selling price for each loaf is Rp5,000.00 + Rp750.00 = Rp5,750.00. Therefore, the selling price of 100 loaves of bread is Rp5,750.00 x 100 = Rp575,000.00.Rate this question:
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- 4.
Mrs. Dhila keeps money in the bank with 8% interest a year. If after 9 months the savings become Rp2,120,000.00, then the initial savings is ....
- A.
Rp1,950,400.00
- B.
Rp2,000,000.00
- C.
Rp1,992,800.00
- D.
Rp2,240,000.00
Correct Answer
B. Rp2,000,000.00Explanation
The initial savings can be calculated using the formula for compound interest:
A = P(1 + r/n)^(nt)
Where:
A = final amount (Rp2,120,000.00)
P = principal amount (initial savings)
r = annual interest rate (8% or 0.08)
n = number of times interest is compounded per year (assuming it is compounded annually, n = 1)
t = time in years (9 months or 9/12 = 0.75 years)
By substituting the given values into the formula, we can solve for P:
2,120,000 = P(1 + 0.08/1)^(1*0.75)
2,120,000 = P(1.08)^(0.75)
2,120,000 = P(1.065)
P = 2,120,000 / 1.065
P ≈ Rp1,992,800.00
Therefore, the initial savings is approximately Rp1,992,800.00.Rate this question:
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- 5.
The angle of x is....
Correct Answer
52Explanation
The angle of x is 52 degrees.Rate this question:
- 6.
A line is a straight path that goes on forever in both directions.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
A line is defined as a straight path that extends infinitely in both directions. It has no endpoints and continues indefinitely. Therefore, the statement "A line is a straight path that goes on forever in both directions" is true.Rate this question:
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- 7.
A ray is part of a line that has two endpoints.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
A ray is not part of a line that has two endpoints. A ray is a part of a line that has one endpoint and extends infinitely in one direction.Rate this question:
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- 8.
Angle ∠3 and angle ∠7 are ___.
- A.
Alternate Interior Angles
- B.
Same-side Interior Angles
- C.
Corresponding Angles
- D.
Opposite vertical angles
Correct Answer
A. Alternate Interior AnglesExplanation
Alternate interior angles are formed when a transversal intersects two parallel lines. In this case, angle 3 and angle 7 are alternate interior angles because they are on opposite sides of the transversal and between the two parallel lines.Rate this question:
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- 9.
The relationship between angle x and y is...
- A.
Opposite angles
- B.
At the point angles
- C.
Complementary angles
- D.
Supplementary angles
Correct Answer
D. Supplementary anglesExplanation
Supplementary angles are a pair of angles that add up to 180 degrees. In this case, angle x and angle y are supplementary because their measures add up to 180 degrees. Therefore, the relationship between angle x and y is supplementary angles.Rate this question:
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- 10.
The value of x is ...
- A.
90o
- B.
47o
- C.
57 o
- D.
133o
Correct Answer
B. 47o -
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Current Version
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Mar 09, 2023Quiz Edited by
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Mar 08, 2020Quiz Created by
Eli
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