Question

By Proportionality law check whether 15:20 and 3:4 are in propotion​

Answer 1

Proportionality law, A:B = C:D

In our case,

A:B = 15:20 = 15/20 = 3/4

C:D = 3:4 = 3/4

Thus, A:B = C:D

So, 15:20::3:4