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25 June, 19:41

15. Edgar Anderson earns $200 a week plus a 15% commission on all sales over $1,000. If Mr. Anderson's sales for one week are $2,500, what is his gross pay for that week?

A. $350

B. $525

C. $575

D. $425

16. Which one of the following statements expresses a true proportion?

A. 14 : 6 = 28 : 18

B. 42 : 7 = 6 : 2

C. 2 : 3 = 3 : 2

D. 3 : 5 = 12 : 20

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Answers (1)
  1. 25 June, 20:57
    0
    15.

    2500 X 15 = 37500

    37500 : 100 = 375

    375 + 200 = 575

    The answer is C.

    16.

    The easiest way to answer this question is by going through each answer one by one:

    14:6 = 28:18

    28 : 14 = 2

    18 : 6 = 3

    Since both numbers were multiplied by different numbers, we can establish that this is not a true proportion.

    42:7 = 6:2

    42 : 7 = 6

    7 : 7 = 1

    42:7 = 6:1

    By dividing both numbers by the same number, we can establish that the answer is wrong.

    2:3 = 3:2

    This is obviously wrong. That is because, in ratios, the order counts. So the first 3 is more than the first 2, therefore the second number on the other side of the ratio should be more than the first.

    3:5 = 12:20

    12 : 3 = 4

    20 : 5 = 4

    Since both numbers were multiplied by the same number, this is a true proportion.

    The answer is D.
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