Question

The respective ratio between the present ages of a and b is 9 : 10 and that between present ages of a and c is 9 : 11. If c's present age is 33 years, what is b's present age ?

Answer 1

Given:

C age is 33 and the ratio of A and C is 9:11

C = 11x=33

x=33/11=3 so, the ratio is divided by 3

Hence A ratio is 9 and

A age is 9x3=27

The ratio of A and B is 9:10

A 9x=27

27/9=3 so this ratio is also divided by 3

Hence, B age is 10x3=30