A and B can together do a piece of work in 15 days. B alone can do it in 20 days. In how many days can A alone do it ?

A and B can together do a piece of work in 15 days. B alone can do it

1.	A and B can together do a piece of work in 15 days. B alone can do it in 20 days. In how many days can A alone do it ?
A.	40 days
B.	50 days
C.	60 days
D.	70 days
Answer» D. 70 days

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A and B can together do a piece of work in 15 days. B alone can do it in 20 days. In how many days can A alone do it ?

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