Circles FULL CHAPTER in 30 Minutes

Pipe A can fill a tank in 40 minutes . Pies B can empty the tank in 30 minutes . If both the pipes are opened simultaneously when tank is half full, then will be tank become full or empty?

One pipe can fill a tank in 40 minutes and an outlet pipe can empty the full tank in 24 minutes.If both the pipes are opened simultaneously, what time will it take for the full tank to be emptied?

One pipe can fill a tank in 40 minutes and an outlet pipe can empty the full tank in 24 minutes.If both the pipes are opened simultaneously, what time will it take for the full tank to be emptied?

Pipes A can fill a tank in 30 minutes while pipe B can fill it in 45 minutes. An other pipe C can empty a full tank in 60 minutes. If all three pipes are opened simultaneously, The empty tank will be filled in

A pipe can fill a tank in 10 minutes while another pipe can empty it in 12 minutes. If the pipes are opened alternately each for 1 minute, beginning with the first pipe. the tank will be full after (in minutes):

Water is filled in a container in such a manner that its volume doubles every 5 minutes. If it takes 30 minutes for the container to be foil, in how much time will it be one-fourth full ?