Multiple choice

The ratio of the father's age to the son's age is 4 : 1. If the product of their ages is 256 years. What will be the ratio of their ages after 10 years? पिता तथा पुत्र के आयु का अनुपात 4 : 1 है। यदि उनके आयु का गुणनफल 256 वर्ष है। 10 वर्ष बाद उनके आयु का अनुपात है।

  1. 4 : 3

  2. 3 : 4

  3. 3 : 7

  4. 7 : 3
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D Correct answer
Explanation

Let father's age = 4x, son's age = x. Then 4x × x = 256, so x = 8. Father = 32, son = 8. After 10 years: father = 42, son = 18. Ratio = 42:18 = 7:3.

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