Consider the following data for the performance of a centrifugal pump:
Speed = 1200 rpm
Flow rate = 30 litres per second
Head = 20 m
Power = 5 kw
If the speed is increased to 1500 rpm, the power will be early equal to
(a) 6.5 kW (b) 8.7 kW
(c) 9.8 kw (d) 10.9 Kw