The ratio of Raghav and Chitra’s present ages is 6 ∶ 5 . After 6 years the ratio will became 8 ∶ 7. The ratio of their ages was 5 ∶ 3 when their friendship was started. How long have they been in friendship?
1
11 years
2
10 years
3
10.5 years
4
11.5 years
5
Question Not Attempted