Question: A pump is located at a sump that is 5 0 m below the ground surface and has a discharge rate of 4 5 m

A pump is located at a sump that is 50 m below the ground surface and has a
discharge rate of 45 m3/hour and an efficiency of 78% at an open pit mine. If the water inflow rate is 25 m3/hour, determine the daily pumping hours required.

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