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.

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.

Pipe A can fill a tank in 12 hours. Pipe B can empty it in X hours. If both the pipes are opened together, then the tank will be filled in 30 hours. Find X

Pipe A can fill a tank in 6 hours. Pipe B can empty it in 15 hours. If both the pipes are opened together, then the tank will be filled in how many hours?

Pipe A can fill a tank in X hours. Pipe B can empty it in 15 hours. If both the pipes are opened together, then the tank will e filled in 7 hours and 30 minutes. Find X

There are 7 pipes attached with a tank out of which some are inlets and some are outlets. Every inlet can fill the tank in 10 h and every outlet can empty the tank in 15 h. When all the pipes are opened simul- taneously, the tank is filled up in 2 (8)/(11) h. find the numbers of inlets and outlets .

A pipe can fill a tank in 10 hours. The other pipe can empty it in 20 hours. Both are opened together. In how much time will tank be filled?