Question

Which one of the following statements expresses a true proportion?

A. 14 : 6 = 28 : 18
B. 3 : 5 = 12 : 20
C. 42 : 7 = 6 : 2
D. 2 : 3 = 3 : 2

Answer 1

Answer: B 3:5 = 12:20

3:5 is already simplified. So you take 12:20 and divide both sides by two. Now you have 6:10 divide that by two again and you get 3:5. (3:5 = 3:5)

Answer 2

The answer is B. 3 : 5 = 12 : 20