Arithmetic Aptitude :: Pipes and Cistern
Pipes and Cistern - Important Formulas
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Inlet:
A pipe connected with a tank or a cistern or a reservoir, that fills it, is known as an inlet.
Outlet:
A pipe connected with a tank or cistern or reservoir, emptying it, is known as an outlet.
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If a pipe can fill a tank in x hours, then:
part filled in 1 hour = \(\frac { 1 } { X}\) . -
If a pipe can empty a tank in y hours, then:
part emptied in 1 hour =\(\frac { 1 } { Y}\) . -
If a pipe can fill a tank in x hours and another pipe can empty the full tank in y hours (where y > x), then on opening both the pipes, then
the net part filled in 1 hour = \(\frac { 1 } { X}-\)\(\frac { 1 } { Y}\). -
If a pipe can fill a tank in x hours and another pipe can empty the full tank in y hours (where x > y), then on opening both the pipes, then
the net part emptied in 1 hour =. [ \(\frac { 1 } { Y}\) - \(\frac { 1 } { X}\) ] .