Multiple choice

The average age of a man and his two sons born on the same day is 30 years. The ratio of the ages of father and one of his sons is 5 : 2 respectively. What is the father’s age?

  1. 50 years

  2. 30 years

  3. 45 years

  4. 20 years
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A Correct answer
Explanation

Total age of 3 people = 30 × 3 = 90 years. Ratio of father to son = 5:2. Let father = 5x, son = 2x. Since both sons are same age, total age = 5x + 2x + 2x = 9x = 90, so x = 10. Father's age = 5x = 5 × 10 = 50 years.

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