A pipe can fill a tank in 4 hours and another pipe can empty the same tank in 6 hours. When both the pipes are opened simultaneously, the part of tank filled in 1 hour is …………..

A pipe can fill a tank in x hours and another pipe can empty it in (y:)>backslash x) hours.If both the pipes are open,in how many hours will the tank be filled? (x - y) hours b.(y-x) hours c.(xy)/(x-y) hours d.(xy)/(y-x) hours

A tank has 8 pipes. Out of which some one inlet and some one outlets. Inlet pipe can fill a tank in 8 hours and an outlet pipe can empty the tank in 6 hours. If all pipes are opened together then the tank get filled in 8 hours. Find the number of inlets and outlets pipe.

Out of 7 pipes. Some one inlets and some one out- lets. An inlet pipe can fill a tank in 5 hours amd one outlet pipe can empty tank in 4 hours. It all the pipes are opened together then the tank get filled in 20 hours. Find the number of inlet and outlets pipe.