Kanhaiya can do a piece of work in some time. Ravi takes twice as much time as Kanhaiya, Nitesh takes thrice as much time as Kanhaiya and Shubham takes thrice as much as time Ravi to do the same work. If Ravi, Nitesh and Shubham can do the work in 40 minutes by working together, then how much time will Kanhaiya take to complete the work alone?
1
1 hour
2
1 hour 20 minutes
3
1 hour 30 minutes
4
40 minutes
5
None of these