Multiple choice

The age of a father is twice that of his son’s at present age. After 5 years the sum of their ages will be 85. How old are they now? पिता की आयु अपने पुत्र की वर्तमान आय से दोगुनी है। 5 वर्ष बाद उनकी आयु का योग 85 होगा तो अब उनकी आयु क्या होगी ?

  1. 40, 20

  2. 26, 76

  3. 60, 30

  4. 50, 25

  5. 0
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D Correct answer
Explanation

F = 2S. (F+5) + (S+5) = 85. F + S + 10 = 85, F + S = 75. 2S + S = 75, 3S = 75, S = 25, F = 50.

AI explanation

Let the present age of the son be x, making the father's age 2x. After 5 years, their combined age is 85, so the equation is x + 5 + 2x + 5 = 85. Simplifying gives 3x + 10 = 85, resulting in 3x = 75 and x = 25. The father is 2(25) = 50, so their present ages are 50 and 25.

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