Multiple choice

The average age of 6 sons in a family is 8 years, average age of sons and parents is 22 years. If father is 8 years older than the mother, then find the age of the father after 13 years. किसी परिवार के 6 पुत्रों की औसत आयु 8 वर्ष है, पुत्रों और माता - पिता की औसत आयु 22 वर्ष है | यदि पिता, माता से 8 वर्ष बड़ा हो, तो 13 वर्ष बाद पिता की आयु ज्ञात कीजिये |

  1. 81 years/वर्ष

  2. 75 years/वर्ष

  3. 72 years/वर्ष

  4. 68 years/वर्ष

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A Correct answer
Explanation

6 sons average = 8, total = 48. 8 people (sons+parents) average = 22, total = 176. Parents total = 176 - 48 = 128. Father = Mother + 8. Solving: Father = 68. After 13 years: 68 + 13 = 81.