Question

40 years from now a person will triple his present age. What is his present age options are 10,29,25,22

Answer 1

Answer:

10 yrs old............

Answer 2

Answer:

Let the present age of person be x years.

After 40 years his age will be x+40 years.

As per given condition :-

$3x = x + 40 \: \: \: \\ 3x - x = 40 \\ 2x = 40 \\ \\ x = \frac{40}{2} \\ x = 20 \: years$

So present age of person is 20 years.