Correct Answer - Option 1 : 39 years
Given:
Maryam’s age – Nisha’s age, 4 years ago = 11 years
Ratio of Maryam’s age, 5 years hence and Nisha’s age 2 years ago = 2 ∶ 1
Calculation:
Let, present age of Maryam and Nisha be x and y respectively
x – (y – 4) = 11
⇒ x – y = 7 ----- (1)
5 years hence, Maryam’s age = x + 5 and 2 years ago, Nisha’s age = y – 2
(x + 5) = 2 (y – 2)
⇒ (x + 5) = 2y – 4
⇒ 2y – x = 9 ---- (2)
On equating, eqn. (1) and (2)
⇒ y = 16
⇒ x = 23
Present ages of Maryam and Nisha are 23 years and 16 years respectively
Therefore, sum of their present ages = 23 + 16 = 39 years
∴ Sum of their present ages is 39 years