Chinese, asked by Namita11, 1 year ago

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?

Answers

Answered by Anonymous

9

The answer is 31 5/7 yrs or 222/7 yrs

Solution:-
Required average = (67x2 + 35x2 + 6x3)/(2+2+3)
= (134+70+18)7 = 222/7 = 31 5/7 yrs

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