A and B working separately can do a piece of work in 9 and 12 days res – McqOptions

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1.	A and B working separately can do a piece of work in 9 and 12 days respectively. If they work for a days alternatively. A beginning, in how many days the work will be complete?
A.	7.5 days
B.	35/4 days
C.	41/4 days
D.	49/4
Answer» D. 49/4

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