10. A and B can do a piece of work in 10 days, B and C in 12 days and C and A in 15 days. If B alone works for 15 days and then joined by A and C, in how many days will the work be finished?

10. A and B can do a piece of work in 10 days, B and C in 12 days and

1.	10. A and B can do a piece of work in 10 days, B and C in 12 days and C and A in 15 days. If B alone works for 15 days and then joined by A and C, in how many days will the work be finished?
A.	20 days
B.	15 days
C.	16 days
D.	18 days
Answer» E.

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10. A and B can do a piece of work in 10 days, B and C in 12 days and C and A in 15 days. If B alone works for 15 days and then joined by A and C, in how many days will the work be finished?

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