A family consists of two grandparents, two parents and three grandchildren. The average age of the grandparents is 65 years, that of the parents is 32 years and that of the grandchildren is 5 years. The average age of the family is Choose the correct option:
A) 29 1/7 years
B) 29 6/7 years
C) 39 6/7 years
D) 19 6/7 years
E) 25 6/7 years
Total age of the grandparents = 65 × 2=130   Total age of the parents = 32 × 2=64   Total age of the grandchildren = 5 × 3=15   Average age of the family = (130+64+15)/7   =209/7   =29 6/7 years   ANSWER:29 6/7 years
<result>B</result>
A family consists of two grandparents, two parents and three grandchildren. The average age of the grandparents is 65 years, that of the parents is 32 years and that of the grandchildren is 5 years. The average age of the family is