A and B can do a work in 12 days, B and C in 15 days, C and A in 20 days. If A, B and C work together, they will complete the work in?

A and B can do a work in 12 days, B and C in 15 days, C and A in 20

1.	A and B can do a work in 12 days, B and C in 15 days, C and A in 20 days. If A, B and C work together, they will complete the work in?
A.	5 days
B.	7 5/6 days
C.	10 days
D.	15 2/3 days
Answer» D. 15 2/3 days

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A and B can do a work in 12 days, B and C in 15 days, C and A in 20 days. If A, B and C work together, they will complete the work in?

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