Question

after 12 years rishi shall be 3 times as old as he was 4 year ago find his present age

Answer 1

Let the present age of Rishi = x.

After 12 years his age = x+12.
4 years ago his age was = x-4.

According to question:-
3(x-4) = (x+12)
3x-12 = x+12
3x-x = 12+12
2x = 24
x = 24/2
x = 12.

So the present age of Rishi is 12 years.

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Answer 2

Answer :

Let, the present age of Rishi is x years.

Then, after 12 years, Rishi will be (x + 12) years old and 4 years ago, he was (x - 4) years old.

By the given condition,

x + 12 = 3(x - 4)

⇒ x + 12 = 3x - 12

⇒ 3x - x = 12 + 12

⇒ 2x = 24

⇒ x = 12

Therefore, Rishi is now 12 years old.

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