Working for 9 hours a day, X can finish a task in 3 days, Y can finish – McqOptions

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1.	Working for 9 hours a day, X can finish a task in 3 days, Y can finish three times of the same task in 8 days, and Z can finish five times of the same task in 12 days. Working together, in how many hours will they complete the task?
A.	12
B.	8
C.	10
D.	9
Answer» C. 10

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