Question

12 year hence a man will be 4 times as he was 12 years ago, then his present age is

Answer 1

X+12=4(x-12)

X+12=4x-48

3x=60

X=20 ....x is present age ...therefore present age is 20

Answer 2

Let the present age be A

age after 12 years is A+12

Then

4A=A+12

4A-A=12

3A=12

A=4

Then present age is 4 years