A and B can do a work in 72 days. B and C in 120 days. A and C in 90 d – McqOptions

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1.	A and B can do a work in 72 days. B and C in 120 days. A and C in 90 days. In how many days can A alone do the work?
A.	80
B.	100
C.	110
D.	120
Answer» E.

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