Pipes and Cisterns - Important Formulas, Logical Reasoning LR Notes | EduRev

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LR : Pipes and Cisterns - Important Formulas, Logical Reasoning LR Notes | EduRev

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Important Concepts and Formulas - Pipes and Cistern

Inlet is a pipe connected with a tank or cistern or reservoir. It is used to fill the tank.

Outlet is a pipe connected with a tank or cistern or reservoir. It is used to empty the tank.

If a pipe can fill a tank in x hours,
part of the tank filled in 1 hour =1/x

If a pipe can empty a tank in y hours,
part of the tank emptied in 1 hour =1/y

If a pipe can fill a tank in x hours and another pipe can fill it in y hours, then both the pipes together can fill the tank in  Pipes and Cisterns - Important Formulas, Logical Reasoning LR Notes | EduRev hours.

Suppose a pipe can fill a tank in x hours and another pipe can empty the full tank in y hours. We can examine two cases here.

If x<y

net part filled in 1 hour = Pipes and Cisterns - Important Formulas, Logical Reasoning LR Notes | EduRev

 

If y<xy<x 
net part emptied in 1 hour =Pipes and Cisterns - Important Formulas, Logical Reasoning LR Notes | EduRev

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