A pipe can fill a tank in 0.9 hours and another pipe can empty in 0.7 hours. If tank is completely filled and both pipes are opened simultaneously then 450 liters of water is removed from the tank in 2.5 hours. What is the capacity of the tank?
(Pipe & Cistern)Here, 0.9 hours = 0.9 * 60 = 54 minutes; 0.7 hours = 0.7 x 60=42 minutes
2.5 hours = 2.5 x 60 = 150 minutes
In 54 minutes first pipe can fill=
And in 42 minutes another pipe can empty = = part of the tank
As, the tank was filled, after opening both the tank will be filled to
According to question
parts of tank = 450 liters
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