X can do a piece of work in 30 days. X leaves after working for 3 days and the remaining work is completed by Y in 18 days. How much time is taken by Y to complete the piece of work alone?
1
5 days
2
15 days
3
10 days
4
20 days
X can do a piece of work in 30 days. X leaves after working for 3 days and the remaining work is completed by Y in 18 days. How much time is taken by Y to complete the piece of work alone?