A and B can do a piece of work in 18 days: B and C can do it in 24 days while C and A can finish it in 36 days. In how many days can A. B. C finish it. if they all work together?
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=4+3+272 {LCM 18,24 and 36=72}
=972
∴2(A+B+C)'s one day's work =18
Hence, A,B and C's one day work =18×2=116
∴ A,Band C can do the work in 16 days.
70