Advertisements
Advertisements
Question
A family consists of grandparents, parents and three grandchildren. The average age of the grandparents is 67 yr, that of the parents is 35 yr and that of the grandchildren is 6 yr. What is the average age of the family?
Options
`28 4/7` yr
`31 5/7` yr
`32 1/7` yr
None of these
MCQ
Solution
`31 5/7` yr
Explanation:
Required average
= `((67xx2+35xx2+6xx3)/(2+2+3))`
= `((134+70+18)/7) = 222/7 = 31 5/7` yr
shaalaa.com
Average and Age
Is there an error in this question or solution?
