Question

The power of a pump is used to pump 2500 kg of water per minute from a well of 15 m deep. If 40 % of energy during pumping is wasted, then power in horsepower (hp) is [use 1 hp = 746 watt]

Possible answers are: 10.4 hp, 8.2 hp, 13.9 hp, or 16. 4 hp