A and B can separately do a piece of work in 6 days and 12 days respectively. How long will they together take to do the work ?

A and B can separately do a piece of work in 6 days and 12 days respec

1.	A and B can separately do a piece of work in 6 days and 12 days respectively. How long will they together take to do the work ?
A.	9 days
B.	18 days
C.	6 days
D.	4 days
Answer» E.

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A and B can separately do a piece of work in 6 days and 12 days respectively. How long will they together take to do the work ?

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