Two large water reservoirs are connected by 610 m of 3-in. schedule 40 pipe. Water at 20°C is to be bumbed from one to the other at a rate of 200 gallon ber minute. Both tanks
are open to the atmosphere and the levels in both reservoirs are the same. The pines are commercial steel. Determine the cost of hourly pumping if the cost of electricity is
P1Z.00 kwh and the pump has an efficiency of 0.75. Neglect minor Isses due to entrance and exit effects