A, B and C can do a work on their own in 5, 10 and 15 days respectively. Calculate the time required by B and C to do it together.

A, B and C can do a work on their own in 5, 10 and 15 days respectivel

1.	A, B and C can do a work on their own in 5, 10 and 15 days respectively. Calculate the time required by B and C to do it together.
A.	12 days
B.	8 days
C.	5 days
D.	6 days
Answer» E.

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A, B and C can do a work on their own in 5, 10 and 15 days respectively. Calculate the time required by B and C to do it together.

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