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