A. 7
B. 8
C. 9
D. 10
D. 10
Related Posts:
- Five years ago the average of the ages of A and B…
- The average age of 8 men increases by 2 years when…
- The average age of a husband, wife and their child 3…
- A family consists of two grandparents, two parents…
- A tank is filled in 5 hours by three pipes A, B and…
- The average age 9 members of a committee are the…