Rahul is 3 times as old as Seema. Laxmi was twice as old as Rahul four years ago. In four year's time, Rahul will be 31. What are the present ages of Seema and Laxmi?

Explanation

Let S= Seema’s present age, R= Rahul present age and L= Laxmi present age R+ 4 = 31 years, R= 27 years Rahul is three times Seema= 9 Laxmi was twice as old as Rahul four years ago = (L-4)= 2×(R-4) (L-4) = 23 × 2 = 46 +4 = 50 Therefore, option (D) is the correct answer.