Question: A does half as much work as B in three-fourth of the time. If together they take 18 days to complete a work, how much

A does half as much work as B in three-fourth of the time. If together they take 18 days to complete a work, how much time shall B take to do it ?
a. 30 days
b. 35 days
c. 40 days
d. None of these

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