Question

solve it properly with equation and and then solve the equation ​

Answer 1

$\underline\red{ANSWER}$

5 Years old.

$\underline\purple{EXPLANATION}$

The the explanation for the question is given above .

Hope it helps you

Answer 2

Let his current age be x

after 20 years=

x+20=5x

20=5x-x

20=4x

20/4=x

x=5

therefore his current age=5