Ramu and Mohan can separately complete a work in 10 hours and 16 hours, respectively. After working for 2 hours together, Mohan leaves the work. In how many hours will Ramu finish the remaining work?
1
6\(\frac {1} {4}\)
2
6\(\frac {3} {4}\)
3
5\(\frac {3} {4}\)
4
7\(\frac {3} {4}\)