A, B and C can do a work in 60 days, 40 days and 120 days respectively. All three started the work but after 10 days A and C left. Find the number of days in which B alone can finish the remaining work.
1
10
2
20
3
30
4
40
5
50
A, B and C can do a work in 60 days, 40 days and 120 days respectively. All three started the work but after 10 days A and C left. Find the number of days in which B alone can finish the remaining work.