A and B can do a piece of work in 18 days; Band C can do it in 24 days A and C can do it in 36 days. In how many days will A, Band C finish it together? Choose the correct choice from the following choices: A) 16 days B) 12 days C) 3 days D) 5 days E) 9 days
Sol. (A + B)'s 1 day's work = (1/18) (B + C)'s 1 day's work = (1/24)   and (A + C)'s 1 day's work = (1/36)   Adding, we get: 2 (A + B + C)'s 1 day's work =¬(1/18 + 1/24 + 1/36)   =9/72 =1/8   (A +B + C)'s 1 day's work =1/16   Thus, A, Band C together can finish the work in 16 days.   16 daysns: 16 days
<result>A</result>
A and B can do a piece of work in 18 days; Band C can do it in 24 days A and C can do it in 36 days. In how many days will A, Band C finish it together?