Question

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

Answer 1

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

Answer 2

let the current age be 'X'
ATQ,
after twelve years your age will be X+12 years
four years ago your age was X-4 years
therefore ,
X+12 = 3*(X-4)
X+12= 3X-12
12+12= 3X-X
24=2X
X= 12 (Ans)