Multiple Choice Questions on A family consists of two grandparents two parents and three grandchildren The average age of the gra........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

A family consists of two grandparents two parents and three grandchildren The average age of the gra...........

Quantitative Aptitude ( CCS) Average
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    A family consists of two grandparents, two parents and three grandchildren. The average age of the grandparents is 67 years, that of the parents is 35 years and that of the grandchildren is 6 years. What is the average age of the family?

    28(4/7) years

    Incorrect Answer

    31(5/7) year

    Correct Answer

    32(1/7) years

    Incorrect Answer

    None of these

    Incorrect Answer
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    Explanation:

    Required average = (67×2+35×2+6×3 /2+2+3)

    =(134+70+18 /7) = 222 /7 = 31 5/7years.

    Hence, option 2 is the correct answer.

    By: Amit Kumar
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