Total age of father and son is 42 years and the difference of their ages is 22 years. What is son’s age now?

Total age of father and son is 42 years and the difference of their ages is 22 years. What is son’s age now?

A 10 years

B 11 years

C 12 years

D 13 years

Solution

Correct Answer: Option A

Here,

Fathers age =x

Sons age=y

so,x+y=42…...(1)

x-y=22…..(2)

Doing 1-2,

we get,

2y=20

or, y=10

So, son’s age=10