The ratio of ages of father and son 5 years ago was 7 : 2. The ratio of ages of father and son 15 years hence will be 11 : 6. What will be the average of ages of father and son 7 years hence?
1
34.5
2
35.5
3
35
4
37.5
5
None of these
The ratio of ages of father and son 5 years ago was 7 : 2. The ratio of ages of father and son 15 years hence will be 11 : 6. What will be the average of ages of father and son 7 years hence?