Warning: implode(): Invalid arguments passed in /www/wwwroot/jobquiz.info/mdiscuss.php on line 336 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? ?->(Show Answer!)
1. 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?
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By: guest on 01 Jun 2017 05.44 pm
Required average = 67 x 2 + 35 x 2 + 6 x 3 2 + 2 + 3 = 134 + 70 + 18 7 = 222 7 = 31 5 years. 7