Question

Which pair of ratios forms a proportion?
10/15 & 5/30
8/40 & 16/20
18/13 & 9/26
18/12 & 36/24

I think it is either 10/15 & 5/30 or 18/12 & 36/24

Answer 1

Set the ratios equal to each other, then cross multiply

Answer 2

18/12 & 36/24

Answer 3

18/12 and 36/24 are in proportion.

Answer 4

Thank you guys :)

Answer 5

10/15=2/3
5/30=1/6
so they are not in proportion

Answer 6

Cheers!!!!!!!!!!!!!!!!!