Question

15year from now renu will be 4times her parents age : what is the present age?

Answer 1

Let the present age of Renu is 'x'.

A/Q,

After 15 years, Renu's age = x + 15 yrs.

⇒ 4x = x + 15 yrs

⇒ 4x - x = 15 yrs

⇒ 3x = 15 yrs

⇒ x = 15 yrs / 3

∴ x = 5 yrs.

Hence, Renu's present age is 5 years.

Verification : L.H.S = 4x = 4 × 5 yrs = 20 yrs

R.H.S = x + 15 yrs = 5 yrs + 15 yrs = 20 yrs. VERIFIED.


So, present age of RENU is 5 yrs.

Answer 2

Let the present age of Renu = x years
After 15 years Renu's age = x + 15 years
Given that
The present age of Renu is 4 times of herself after 15 years
Therefore
4x = x + 15
3x = 15
x = 5 years

The present age of Renu = 5 years

Hope this helps you.