A and B together can complete a piece of work in 24 days. C's efficiency is half that of A's. If A, B, and C all work together, they finish th...
Question
A and B together can complete a piece of work in 24 days. C's efficiency is half that of A's. If A, B, and C all work together, they finish the work in 20 days. How many days will B and C take to complete the work if they work together?