Question

A man is thrice as old as his son. After 12 years, he will be twice as old as his son at that time. Find their present ages.

Answer 1

Let the present age of the son = x years

and the present age of the father = 3x years

After 12 years,

Son’s age will be (x + 12) years

and father’s age will be (3x + 12) years

According to the condition,

3x + 12 = 2 (x + 12)

3x + 12 = 2x+ 24

3x – 2x = 24 – 12

x = 12

∴Present age of the son = 12 years

and Present age of the father = 3×12 years

= 36 years