A family consists of two grandparents, three parents and four grandchildren. The average age of the grand parents is 65 years, that of the parents is 32 years and that of the grand children is 8 years. What is the average age of the family?
1
None of These
2
\(28\frac{2}{3} \) years
3
28 years
4
\(28\frac{1}{3} \) years