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

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

1.	A and B can do work in 12 days. B and C in 15 days. C and A in 20 days. If A, B and C work together they can complete the work in how many days?
A.	5 days
B.	10 days
C.	\(7{5 \over 6}\) days
D.	\(12{2\over 3}\) days
Answer» C. \(7{5 \over 6}\) days

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

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