To complete a certain task, X is 40% more efficient than Y, and Z is 4 – McqOptions

MCQOPTIONS

1.	To complete a certain task, X is 40% more efficient than Y, and Z is 40% less efficient than Y. Working together, they can complete the task in 21 days. Y and Z together worked for 35 days. The remaining work will be completed by X alone in:
A.	4 days
B.	8 days
C.	5 days
D.	6 days
Answer» D. 6 days

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