A, B, and C can do a piece of work in 8 days. B and C together do it in 24 days. B alone can do it in 40 days. In what time will it be done by C working alone?

Question: A, B, and C can do a piece of work in 8 days. B and C together do it in 24 days. B alone can do it in 40 days. In what time will it be done by C working alone?Solution:B & C do this work in 24 days. B alone does this work in 40 days. C alone can do work in 1 day 1/24 - 1/40 = 2/120 = 1/60 of the work∴ C will take 60 days to finish the work.