Average Practice Test 1

Question : 9 of 40

Marks: +1, -0

A family consists of grandparents, parents and four grandchildren. The average age of the grandparents is 113 years, that of the parents is 54 years and that of the grandchildren is 14 years. What is the average age of the family?

47.45 years
46 years
48.75 years
47 years
48.5 years

Validate

Solution:

Total age of grandparents = (113 × 2) years
Total age of parents = (54 × 2) years
Total age of 4 grandchildren = (14 × 4) years
∴ Average age of the family

={226+ 108 +56}/8

=390/8

=48.75

years

Go to Question:

Prev Question

Next Question