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 alone
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let b = 3/4 of x=3/4x
let a =1/2x
total time =18 days
A.T.Q
3/4x+1/2x =18
5/4x=18
x=18×4 ÷5
x=62/5
value of b = 3/4 ×62/5 = 46/5 days
9days 2 hours
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