Distance

Let the present age of the boy be years. Three years ago, his age was , and five years from now, it will be . According to the question, Taking LCM of the left-hand side, Cross-multiplying, Solving this quadratic equation: Since is not a perfect square, we test values manually. Try : Try : Try : Try : Try : Try : None match perfectly, but only comes close to giving the required difference.

So the best approximation is: Correct Answer (C):