A father said to his son” I was as old as you are at the present at the time of your birth” If the father’s age is 42 years now, then the sons age four years back was?

A father said to his son” I was as old as you are at the present at the time of your birth” If the father’s age is 42 years now, then the sons age four years back was?

A 16

B 17

C 18

D 19

Solution

Correct Answer: Option B

sons current age=42/2=21

so,4 years back sons age was=21-4=17