If A and B together can complete a piece of work in 15 days and B alone in 20 days, in how many days can A alone complete the work ?

If A and B together can complete a piece of work in 15 days and B alon

1.	If A and B together can complete a piece of work in 15 days and B alone in 20 days, in how many days can A alone complete the work ?
A.	60 days
B.	45 days
C.	40 days
D.	30 days
Answer» B. 45 days

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If A and B together can complete a piece of work in 15 days and B alone in 20 days, in how many days can A alone complete the work ?

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