A and B can do a work in 12 days, B and C can do the same work in 15 days, and C and A can do the same work in 20 days. A, B and C will complete the work together in:

A and B can do a work in 12 days, B and C can do the same work in 15 d

1.	A and B can do a work in 12 days, B and C can do the same work in 15 days, and C and A can do the same work in 20 days. A, B and C will complete the work together in:
A.	20 days
B.	28 days
C.	12 days
D.	10 days
E.	None of these
Answer» E. None of these

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A and B can do a work in 12 days, B and C can do the same work in 15 days, and C and A can do the same work in 20 days. A, B and C will complete the work together in:

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