A and B are two workers working together they can complete the whole work in 10 hours. A can complete the work in 8 hours with the help of C. Similarly B and C can complete the work in \(13\frac{1}{3}\) hours. If A and B did 50% of the work and after that C work all the time. How much time needed to complete the work?
1
15
2
10
3
12
4
11
5
14