Two pipes in series have the following properties: L1 ¼ 200 m, D1 ¼ 400 mm, K1 ¼ 2, L2 ¼ 650 m, D2 ¼ 350 mm, K2 ¼ 3. The upstream piezometric head is HA ¼ 200 m and downstream HB ¼ 57 m. For both pipes, the friction factor is f ¼ 0.025. Estimate the discharge flowing in the two pipes.