Can you help me answer problems #1 and #2. Thank you!

Problems 1. (2.5 pt) You wish to use the pump shown in Figure 4.2, but you want to replace the motor with one that operates at 1170 rpm what will the pump operating point be if you change the motor? 2. (2.5 pt) You wish to use the pump shown in Figure 4.2, but you wish the operational flowrate to be 7100 gpm. What is the impeller diameter required meet this output? BOO.0 600.0 2 400.0 200.0 1.0 250.0 0.9 225,0 0.8 200.0 0.7 175.0 0.6 150.0 0.5 Efficiency Pump Head (it) & NPSH, (it) 125.0 0.4 100.0 0.3 75.0 0.2 SO. 25,0 - 0.0 0.0 0 1,000 2,000 3,000 4,090 5,000 6,000 7,000 8,000 9,000 10,000 Discharge (epm) Figure 4.2 Performance curve for a pump with an impellor diameter of 15.75-in operating at 1750 rpm. The solid black line represents pump performance curve, the solid grey line represents system curve, the dashed line represents the efficiency curve (read from right vertical axis), the dotted line represents NPSHR, and the dash-dot line represents the BHP