Question

a family consists of grandparents, parents and two grandchildren. the average age of thegrandparents is 56 years, that of the parents is 27 years and that of the grandchildren is 7 years. what is the average of the family?

Answer 1

45 is the average of the family:

56+27+7=90

90\2=45

Answer 2

First you add up all the number:

56 + 27 + 7 = 90

Then you divide the number of how many numbers there were:

90 / 3 or 90 divided by 3 = 30

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Or if you just want the answer:

The average of the family is 30.