Multiple choice

Ratan's age after $15$ years will be $5$ times his age $5 $ years back. What is Ratan's present age?

  1. $15$ years
  2. $5$ years
  3. $10$ years
  4. $50$ years
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Let Ratan's present age be x. The equation is x + 15 = 5(x - 5). Solving this, x + 15 = 5x - 25, which simplifies to 4x = 40, so x = 10.

AI explanation

Let Ratan's present age be x. After 15 years his age will be x + 15, and 5 years back it was x - 5. Using the given relation, x + 15 = 5(x - 5), which simplifies to x + 15 = 5x - 25. Solving gives 4x = 40, so Ratan's present age is 10 years.

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