Question

The present age of a and b are in the ratio 4 : 5 arid after five years they will be in the ratio 5 : 6 then their sum of present age is

Answer 1

if the present age of a and b is in the ratio 4:5 and after 5 years if it changes 5:6 the present ages of A and B are multiples of 5 and a's age is multiple of 4 and 5 and b's age is multiple of first 5 hence their ages will be 20 and 25 .Therefore the sum is equal to 45