Question
A does half as much work as B in three -fourth of the time. If together hey take 18 days to complete the work , how much time shall B take to do it ?
Answer: Option A
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Suppose B takes `x` days to do the work.
`:.` A take `(2 xx 3/4 x) = (3x)/(2)` days to do it.
(A + B) 's 1 day's work = `1/18`
`:.` `1/x + (2)/(3x) = 1/18 or x = 30.`
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