A pipe Can fill a tanke in 10 hours. The other pipe can fill a tank in 15 hours. How much time will they take to fill that tank together.

If A & B two pipes can fill a tank in 10 hr. when 'A' pipe can fill a tank in 6 hr. alone then in how much time will be taken to fill/empty the tank when pipes 'B' open alone ?

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?

If 'A' pipes can fill a tank in 10 hr. & pipes 'B' can empty a tank in 15hr. When both pipes are opened simultaneously, How much time will be taken to fill the tank ?

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 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 …………..

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.

Pipe A can fill a tank in 30 hours and pipe B in 45 hour.If both the pipes are opened in an empty tank how much time will they take to fill it?