Question

AFTER 12 YEAR MANOJ WILL BE 3TIMES AS OLD AS HE WAS 4 YEAR AGO FIND THE PRESENT AGE

Answer 1

Let Manoj's present age be 'x' years
ATQ-
(x-4)×3=x+12 (Manoj's age 4 years ago=x-4)
=3x-12=x+12
=3x-x=12+12
=2x=24
x=24/2
x=12 years

Answer 2

My friend....

let,
the present age of manoj =x
after 12 year her (manoj )age will be =x+12
and
before 4 year her (manoj )age was =x-4
according to question,
=x+12=3(x-4)

=x+12=3x-12

=3x-x=12+12

=2x=24

=x =24/2
=12..
hence, the present age of manoj will be 12