A and B can do a piece of work in 18 days, B and C in 24 days, A and C – McqOptions

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1.	A and B can do a piece of work in 18 days, B and C in 24 days, A and C in 36 days. In what time can they do it all working together?
A.	18
B.	17
C.	16
D.	15
Answer» D. 15

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