After 12 years priti shall be 3 times as old as she was 4 years ago, find her present age

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Text Solution

Solution : Let the present age be `x`.<br>Age `4` years ago`=x−4`.<br>Age `12` years later`=x+12`.<br>According to the given question,<br>`x+12=3(x−4)`<br>`x+12=3x−12`<br>`2x=24`<br>`x=12` years<br>`therefore` The present age`=12` years.

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

Solution

Let my present age $=x$ years.
After $12$ years my age will be $x+12$ years.
$4$ years ago my age was $x-4$ years.
So $x+12=3(x-4)$
$\Rightarrow x+12=3x-12$
$\Rightarrow 3x-x=12+12$
$\Rightarrow 2x=24$
$\therefore x=12$ years
Therefore, the present age is $12$ years.