If a pipe can fill a cistern in 3 hours, then the part filled in one hour is:
If time taken by one tap to fill the cistern is 5 hours, then the tap can fill work (1/5)th part of the cistern in ________ hour/hours.
One tap can fill a cistern in 3 hours and the waste pipe can empty the full cistern in 5 hours. In what time will the empty cistern be full, if the tap and the waste pipe are kept open together?
One pipe can fill a cistern in 3 hours less than the other. The two pipes together can fill the cistern in 6 hours 40 minutes. Find the time that each pipe will take to fill be cistern.