Question

After 12 years Manoj will be 3 times as old as he was 4 years ago find his present age​

Answer 1

Answer:

Let present age be y years.

(12 + y) = 3(y - 4)

Solve for y.

12 + y = 3y - 12

2y = 24

y = 12

Manoj's present age is 12 years.

Answer 2

let the present age of monoj be x

age after 12 years=x+12

age 4 years ago=x-4

x+12=3(x-4)

x+12=3x-12

-2x=-12-12

-2x=24

x=12