Question

The ratio of the age of mother and son is 7 ∶ 3 and the sum of their ages is 60 years. What is the difference in their age in years?
1. 42
2. 24
3. 4
4. 18

Answer 1

Correct Answer - Option 2 : 24

Given:

Ratio of the age of mother to her son is 7 : 3

Sum of the ages of mother and the son = 60 yrs

Calculation:

Let the age of the mother be 7x

⇒ Age of her son = 3x

According to the question:

7x + 3x = 60 

⇒ x = 6

7x - 3x = 4x = 24

∴ Difference in their ages = 24 years