A does half as much work as B in three-fourth of the time. If together they take 18 days to complete the work , how much time shall B take to do it ?  Pick.
A) 30 days B) 35 days C) 40 days D) None of these E) Cannot be determined
Solution   Suppose B taken x days to do the work.   ∴ A takes (2 x 3/4x) =2x/2 days to do it.   (30 days + B)'s 1 days work = 1/8.<p>   therefore 1/x + 2/3x -1/18 or x</p>=30   30 daysnswer 30 days
<result>A</result>
A does half as much work as B in three-fourth of the time. If together they take 18 days to complete the work , how much time shall B take to do it ?