# Review: Social Arithmetic, Lines, And Angles

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| By Eli
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Eli
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Quizzes Created: 2 | Total Attempts: 166
Questions: 10 | Attempts: 52

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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

A. True
Explanation
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.

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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,-

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.

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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

C. Rp575,000.00
Explanation
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.

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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

B. Rp2,000,000.00
Explanation
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.

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• 5.

### The angle of x is....

52
Explanation
The angle of x is 52 degrees.

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• 6.

### A line is a straight path that goes on forever in both directions.

• A.

True

• B.

False

A. True
Explanation
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.

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• 7.

### A ray is part of a line that has two endpoints.

• A.

True

• B.

False

B. False
Explanation
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.

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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

A. Alternate Interior Angles
Explanation
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.

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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

D. Supplementary angles
Explanation
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.

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• 10.

### The value of x is ...

• A.

90o

• B.

47o

• C.

57 o

• D.

133o

B. 47o

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• Current Version
• Mar 09, 2023
Quiz Edited by
ProProfs Editorial Team
• Mar 08, 2020
Quiz Created by
Eli

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