Question

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

• A. $12$
• B. $13$
• C. $14$
• D. $15$

Answer 1

The correct option is A $12$

Let my present age$=x$ years

After $12$ years my age$=x+12$ years

$4$ years ago my age $=x-4$ years

According to the question,

$x+12=3(x-4)$

$\Rightarrow x+12=3x-12$

$\Rightarrow 3x-x=12+12$

$\Rightarrow 2x=24$ or $x=\frac{24}{2}=12$ years.

$\therefore$ my present age is $12$ years.