X, Y and Z take 18 days to complete a piece of work. If X works alone – McqOptions

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1.	X, Y and Z take 18 days to complete a piece of work. If X works alone he finishes the work in 36 days and if Y works alone he finishes it in 60 days. How long will it take Z to complete the work alone?A. 78 daysB. 90 daysC. 96 daysD. 14 days
A.	B
B.	A
C.	D
D.	C
Answer» B. A

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