A, B and C together can complete a work in 15 days. B and C can complete the same work in 20 days. In how many days A alone can complete the same work?

A, B and C together can complete a work in 15 days. B and C can comple

1.	A, B and C together can complete a work in 15 days. B and C can complete the same work in 20 days. In how many days A alone can complete the same work?
A.	40
B.	45
C.	60
D.	75
Answer» D. 75

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A, B and C together can complete a work in 15 days. B and C can complete the same work in 20 days. In how many days A alone can complete the same work?

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