1.

X takes 4 days to complete one-third of a piece of work; Y takes 3 days to complete one-sixth of the same work, and Z takes 5 days to complete half of the work. If all the three work together for 3 days and X and Z quit, how long will it take for Y to complete the remaining task alone?

A. 6 days
B. 7 days
C. 8.1 days
D. 5.1 days
Answer» E.


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