Question

Renu's mother is four times as old as Renu. After 5 years, her mother will be three times as old as she will then be. How do you find their present ages?

Answer 1

Renu's present age is `10` years and her mother's present age is `40` years.

Explanation:

Let Renu's present age is `x` years

Then her mother's present age is `4x` years

After 5 years , Renu's age will be `x+5` years

After 5 years , her mother's age will be `4x+5` years

By given condition `4x+5 =3(x+5) or 4x-3x =15-5 or x=10 ; 4x=4*10=40`.
Therefore, Renu's present age is `10` years and her mother's present age is `40` years. [ans]