Question

The difference between the ages of Ravi and Ashok is 12 years. The ratio between their ages is 9 : 11. What is the sum of their ages?
1. 129
2. 100
3. 90
4. 120

Answer 1

Correct Answer - Option 4 : 120

Given:

The difference between the ages of Ravi and Ashok = 12 years

The ratio between their ages = 9 ∶ 11

Calculations:

Let the age of Ravi and Ashok be 9x and 11x respectively

⇒ 11x – 9x = 12

⇒ 2x = 12

⇒ x = 6

Sum of their ages = 11x + 9x

⇒ 20 × 6

⇒ 120

∴ The sum of their ages is 120 years