A and B can do a piece of work in 72 days, B and C can do it in 120 days, A and C can do it in 90 days. In what time can A alone do it ?

A and B can do a piece of work in 72 days, B and C can do it in 120 da

1.	A and B can do a piece of work in 72 days, B and C can do it in 120 days, A and C can do it in 90 days. In what time can A alone do it ?
A.	60 days
B.	90 days
C.	115 days
D.	120 days
Answer» E.

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A and B can do a piece of work in 72 days, B and C can do it in 120 days, A and C can do it in 90 days. In what time can A alone do it ?

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