Question

After 12 years Hemraj will be 3 times as old as he was 4 years ago. find his present age?

Answer 1

Let the age of hemraj be x
Let the age of hemraj 4 yrs ago be x-4
A. T.Q
x+12=3(x-4)
x+12=3x-12
x+12+12=3x
24=3x-x
24=2x
24/2=x
12=x
So his present age is 12 yrs

Answer 2

$\textbf{Answer}$

Suppose the present age of Hemant is x years.

=> $\textbf{Hemant's age four year ago = x - 4}$

=> $\textbf{Hemant's age after 12 years = x + 12}$

According to the question,

After 12 years,Hemant will be 3 times as old as we he was 4 years ago.

=> $\textbf{x + 12 = 3 (x -4) ------(1)}$

=> x + 12 = 3x - 12

=> 3x - x = 12 + 12

=> 2x = 24

=> x = 12

Lets verify the value of x in equation (1),
x + 12 = 3(x - 4)
=> 12 + 12 = 3(12 - 4)
=> 24 = 24
So value of x is verified.

$\textbf{The present age of Hemant is 12 years.}$

$\textbf{Hope It Helps}$

$\textbf{Thanks}$