Question

Rakesh is half of his father age now. Ten year ago, he was 20 years younger to his father. What are their present age

Answer 1

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

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

x  - 10 = y – 10 – 20

y – x = 20. ------2

from equation 1 in equation 2

y – 1/2y = 20

y = 40 years

So, x = 1/2 ×40 = 20 years
So, age of father will be 40 years and age of son will be 20 years