Q. 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?

Correct Answer: d) 9, 50

Explanation:
– In 4 years, Rahul will be 31 ⇒ Rahul’s present age R = 31 − 4 = 27.
– Rahul is 3 times as old as Seema ⇒ R = 3S ⇒ 27 = 3S ⇒ Seema’s present age S = 9.
– Four years ago, Rahul was 27 − 4 = 23. Laxmi was twice Rahul’s age then:
L − 4 = 2 × 23 = 46 ⇒ L = 50.
– Therefore, Seema is 9 and Laxmi is 50.