268. A small pump serving as model, when tested in laboratory using water at 3600 rpm,

delivered 30 cfs at a head of 125 ft. If the efficiency of this model pump is 84%, predict thehorsepower input to the prototype pump if it is to develop the same head as model pump and

the model pump has a scale ratio of 1:10. Assume the efficiency of the prototype pump is 90%.

A. 50.6 hp B. 4730 hp C. 3740 hp D. 60.5 hp