A and B working separately can do a piece of work in 9 and 15 days respectively. If they work for a day alternately, with A beginning, then the work will be completed in

A and B working separately can do a piece of work in 9 and 15 days res

1.	A and B working separately can do a piece of work in 9 and 15 days respectively. If they work for a day alternately, with A beginning, then the work will be completed in
A.	10 days
B.	11 days
C.	9 days
D.	12 days
Answer» C. 9 days

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A and B working separately can do a piece of work in 9 and 15 days respectively. If they work for a day alternately, with A beginning, then the work will be completed in

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