Question

The age of babu is double the age of sabu.3 years back the ages of babu and sabu were in the ratio 15:7.then the age of babu is

Answer 1

Let the present age of Sabu be S
then present age of Babu = 2S (given)

3 years back
Age of Sabu = S - 3
Age of Babu = 2S - 3

but the question has given that 3 years ago their ages are equal to the ratio of 15:7

hence 2S - 3 / S - 3 = 15 / 7

14S - 21 = 15S - 45
S = 45 - 21 = 24

S's present age is 24
so, B's present age = 48