Multiple choice

The ratio of the age of a father to that of his son is (5 : 2). If the product of their ages in years is 1000, then the father's age (in years) after 10 years will be -

  1. 50

  2. 60

  3. 80

  4. 100
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Let father's age = 5x, son's age = 2x. Product: 5x × 2x = 10x² = 1000, so x² = 100, x = 10. Father's present age = 5x = 50 years. After 10 years: 50 + 10 = 60 years. Option B is correct.

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