Question

A can do as much work in 4 days as B can do in 5 days and B can do as much work in 6 days as C in 7 days. In what time will c do a piece of work which A can do in a week? ​

Answer 1

A can do as much work in 4 days as B can do in 5 days, and B can do as much work in 6 days ... In what time will C do piece of work which A can do in a week.