A pump delivers water from tank A to tank B through a cast iron pipes. The suction pipe is 30 m long and 20 cm in diameter. The delivery pipe is 200 m long and 20 cm in diameter. The head discharge relationship for the pump is given by H = 100 - 8100 Q² where Q in m³/s. The water surface elevation of tanks A and B are 100 m and 200 m, respectively. If the pump efficiency is 65% and the viscosity of water is 6.47x10* Pa.s, calculate the optimum flow rate in the system and the power delivered by the pump