X alone can do a piece of work in 12 days and Y alone can do the same work in 6 days. In how many days will both together complete the same work?

X alone can do a piece of work in 12 days and Y alone can do the same

1.	X alone can do a piece of work in 12 days and Y alone can do the same work in 6 days. In how many days will both together complete the same work?
A.	3
B.	4
C.	5
D.	2
Answer» C. 5

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X alone can do a piece of work in 12 days and Y alone can do the same work in 6 days. In how many days will both together complete the same work?

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