Question

21 years from now ,I will be 4 times as old as my present age .My present age is years?

Answer 1

Answer:

Step-by-step explanation:

Let the present age be x years.

After 21 years from now, my age will be (x+21) years.

It is also given that after 21 years from now, my age will be 4 times present age i.e. 4x.

∴ x +21 = 4x

x -4x = -21

-3x = -21

    x = 7

Present age is 7 years