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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Review: Social Arithmetic, Lines, And Angles - Quiz

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


Questions and Answers
  • 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. 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,-

    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.

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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. Rp575,000.00
    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

    Correct Answer
    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....

    Correct Answer
    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

    Correct Answer
    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

    Correct Answer
    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

    Correct Answer
    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

    Correct Answer
    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

    Correct Answer
    B. 47o

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