Working together A and B can do a job in 40 days, B and C in 36 days and all three together in 24 days. In how many days can B alone do the job?

Working together A and B can do a job in 40 days, B and C in 36 days a

1.	Working together A and B can do a job in 40 days, B and C in 36 days and all three together in 24 days. In how many days can B alone do the job?
A.	60
B.	90
C.	72
D.	120
Answer» C. 72

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Working together A and B can do a job in 40 days, B and C in 36 days and all three together in 24 days. In how many days can B alone do the job?

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