Question

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

Answer 1

3(x-4) = x+12
3x-12=x+12
2x=24
x=12

Answer 2

let the present age be 'x'

[x+12] = 3[x-4]

x+12 = 3x-12

x-3x = -12-12

-2x = -24

x = -24/-2

x = 12

therefore,the present age is 12.