Question

All of the following are equivalent except _____.

7.5:4.5
5 is to 3
15/5
45/27

Answer 1

15/5

Explanation:

because 7.5 ÷ 4.5 = 1.66667

5 ÷ 3 = 1.66667

and 45 ÷ 27 = 1.66667

but 15 ÷ 5 = 3 therefore it's the off one out.