Question

Rakesh is half his father's age now. Ten years ago, he was 20 years younger to his father. what are their present ages?

Answer 1

Let us assume, the present age of son and father be x years and y years respectively.

Given:

x = 1/2y -----------1

Also given:

x  - 10 = y – 10 – 20

y – x = 20 -----------2

Substitute the value of x from eqn 1 in equation 2

y – 1/2y = 20

y = 40 years

Therefore, x = 1/2 * 40 = 20 years

The present age of the son is 20 years and present age of father is 40 years.