A, B and C can separately do a work in 6, 10 and 15 days respectively. They started to work together but C left after 2 days. In how many days will the remaining work be finished?
1
\(1\frac{2}{4}\)
2
\(1\frac{1}{4}\)
3
\(1\frac{5}{8}\)
4
\(2\frac{7}{4}\)