Question

the age of a father is equal to the sum of the ages of two children. after 20 years sum of age of two children will be twice his father . find age of father at present​

Answer 1

Let the age of father be x and the sum of ages of two children be y year.

x = 2y (Equation 1)

By the second condition

x + 20 = y + 40

[Note that the both children will add 20 year in their ages]

x - y = 20 (Equation 2)

From Equation (1) and (2)

2y - y = 20

y = 20 and x = 40

Age of father = 40 years