A, B and C can do a piece of work in 9, 12 and 15 days respectively. They started together but A leaves 2 days before the completion of the work and B leaves 4 days before the completion of the work. In how many days can all three complete the work?
1
9 days
2
\(5\frac{45}{47}\) days
3
7 days
4
10 days