Question

After 12years i shall be 3times as old as4years ago find my present age??

Answer 1

let your present age be x
the equation is= 
x+12=3(x-4)
x+12=3x-12
2x=24
x=12

Answer 2

Hello
let's say your present age is 'x'
your age after 12 years would be 'x+12'
your age 4 years ago would be 'x-4'
Therefore from the given question
(x+12)=3(x-4)
⇒ (x+12)=3x-12
⇒ 2x=24
⇒x=12
Therefore your present age would be 12
hope you understood
Thank you