A and B can be do a piece of work in 12 days, B and C in 15 days, C and A in 20 days. A alone can do the work in how many days?

A and B can be do a piece of work in 12 days, B and C in 15 days, C an

1.	A and B can be do a piece of work in 12 days, B and C in 15 days, C and A in 20 days. A alone can do the work in how many days?
A.	15
B.	30
C.	24
D.	40
Answer» C. 24

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A and B can be do a piece of work in 12 days, B and C in 15 days, C and A in 20 days. A alone can do the work in how many days?

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