Multiple choice

If the present age of a father is 42 years and that of his son is 12 years, then what was the ratio of their ages two years ago?

  1. 7 : 2

  2. 4 : 1

  3. 2 : 7

  4. 1 : 4
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B Correct answer
Explanation

Present: Father = 42, Son = 12. Two years ago: Father = 40, Son = 10. Ratio = 40/10 = 4:1.

AI explanation

Two years ago, the father's age was 42 - 2 = 40 years and the son's age was 12 - 2 = 10 years. The ratio of their ages at that time was 40 to 10. Dividing both terms of the ratio by 10 simplifies it to 4 : 1.

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