A can do a work alone in 11 days while B takes 16.5 days to do it alone. It takes 5.5 days for them to complete the work together with C. If C and D can work together in 22 days, then how many days will D need to complete the work alone?

A can do a work alone in 11 days while B takes 16.5 days to do it alon

1.	A can do a work alone in 11 days while B takes 16.5 days to do it alone. It takes 5.5 days for them to complete the work together with C. If C and D can work together in 22 days, then how many days will D need to complete the work alone?
A.	44
B.	66
C.	55
D.	77
Answer» C. 55

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A can do a work alone in 11 days while B takes 16.5 days to do it alone. It takes 5.5 days for them to complete the work together with C. If C and D can work together in 22 days, then how many days will D need to complete the work alone?

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