Question

after 12 years I shall be 3 times as old as I was 4 years ago find my present age

Answer 1

Let the present age be =X
so the after twelve years will be= X+12
and the age four years ago will be = x - 4
so according to ques the eqn. form will be
X + 12 =3(x-4)
x+12=3x -12
2X=24
x=24÷2
=12 years
so the present age will be 12 years

Answer 2

Answer:

Step-by-step explanation:

let the present age be x

Age after 12 years=x+12

Age before 4 years=x-4

Then, (x+12)= 3(x-4)

x+12= 3x-12

24=3x-x

24=2x

x=12