# A pipe can fill a tank in ‘x’ hours and another pipe can empty it in ‘y’ hours (y > x). If both the pipes are open, in how many hours will the tank be filled?

A pipe can fill a tank in ‘x’ hours and another pipe can empty it in ‘y’ hours (y > x). If both the pipes are open, in how many hours will the tank be filled? [A](y – x) hours [B](x – y) hours [C] [D] Show Answer Part of the tank filled in 1 ..

# Two pipes A and B can separately fill a cistern in 60 minutes and 75 minutes respectively. There is a third pipe in the bottom of the cistern to empty it. If all the three pipes are simultaneously opened, then the cistern is full in 50 minutes. In how much time the third pipe alone can empty the cistern?

Two pipes A and B can separately fill a cistern in 60 minutes and 75 minutes respectively. There is a third pipe in the bottom of the cistern to empty it. If all the three pipes are simultaneously opened, then the cistern is full in 50 minutes. In how much time the third pipe alone ..

# A tap can empty a tank in one hour. A second tap can empty it in 30 minutes. If both the taps operate simultaneously, how much time is needed to empty the tank?

A tap can empty a tank in one hour. A second tap can empty it in 30 minutes. If both the taps operate simultaneously, how much time is needed to empty the tank? [A]45 minutes [B]20 minutes [C]40 minutes [D]30 minutes Show Answer 20 minutes 1 hour = 60 minutes Rate of emptying the tank ..

# Two pipes A and B can fill a tank in 20 minutes and 30 minutes respectively. If both pipes are opened together, the time taken to fill the tank is:

Two pipes A and B can fill a tank in 20 minutes and 30 minutes respectively. If both pipes are opened together, the time taken to fill the tank is: [A]15 minutes [B]25 minutes [C]50 minutes [D]12 minutes Show Answer 12 minutes Part of the tank filled by both pipes in one minute = Required ..

# Two pipes can fill a tank in 15 hours and 20 hours resoectively, while the third can empty it in 30 hours. If all the pipes are opened simultaneously, the empty tank will be filled in :

Two pipes can fill a tank in 15 hours and 20 hours resoectively, while the third can empty it in 30 hours. If all the pipes are opened simultaneously, the empty tank will be filled in : [A]12 hours [B]10 hours [C]15 hours [D]15.5 hours Show Answer 12 hours Part of the tank filled in ..

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