Correct Answer - Option 3 : 18 Years
Given :
Let my present age now = x
My age in three years time = 3 + x
My age three years ago = x - 3
Calculations:
According to question,
x = 3(x + 3) - 3(x - 3)
x = 3x + 9 - 3x + 9
x = 18
∴ Now I am 18 years old.