Consider three pipes arranged in parallel and laid horizontally, through which fresh water flows steadily. The dimensions of the pipes are as follows: L1 = 500m and D1 = 10cm; L2 = 300m and D2 = 5cm; L3 = 700m and D3 = 15cm. The friction factor is f = 0.007 for all pipes, and the total flow rate is 150m3/hr. Determine the flow rate through each pipe (Q1, Q2, and Q3) in lit/s, and calculate the pressure drop across the entire parallel pipe system in kP a.