A and B working separately can do a piece of work in 9 and 12 days respectively. If they work for a day alternately. If A begins first, in how many days the work will be completed ?

A and B working separately can do a piece of work in 9 and 12 days re

1.	A and B working separately can do a piece of work in 9 and 12 days respectively. If they work for a day alternately. If A begins first, in how many days the work will be completed ?
A.	42/4 days
B.	41/4 days
C.	55 days
D.	None of these
Answer» C. 55 days

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A and B working separately can do a piece of work in 9 and 12 days respectively. If they work for a day alternately. If A begins first, in how many days the work will be completed ?

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