Question

After 12 year i shall be 3 times as old as 1 was 4 yeas ago.find my persent age

Answer 1

Let your present age be x yrs.

Your age after 12 yrs=(a+12)yrs
Your age 4 yrs ago=(a-4)yrs

a/c

a+12=3(a-4)
a+12=3a-12
12+12=3a-a
24=2a
a=24/2
a=12

Hence,your present age=12 yrs