X can do a piece of work in 20 days and Y can do the 1/7th of the same work in 5 days. In how many days together they can complete the 11/14th of the total work?

X can do a piece of work in 20 days and Y can do the 1/7th of the same

1.	X can do a piece of work in 20 days and Y can do the 1/7th of the same work in 5 days. In how many days together they can complete the 11/14th of the total work?
A.	140/11 days
B.	15 days
C.	20 days
D.	10 days
E.	None of these
Answer» E. None of these

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X can do a piece of work in 20 days and Y can do the 1/7th of the same work in 5 days. In how many days together they can complete the 11/14th of the total work?

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