As field engineer on a construction project, you need to pump water from a river $($water surface elevation of $362$ meters$)$ to a supply reservoir $($water surface elevation $400$ meters$).$ The available pump has the performance characteristics tabulated below. The discharge pipeline is a $5-cm-$diameter ductile iron pipe $($ f $=0\mathrm{.}018)$ and is $400$ meters long. You have performed the calculations in the table below and you note that the likely flow rate is $8m^{3}hr,$ which is too low. To increase the flow rate, you may have access to an identical pump and can hook it up in parallel to the existing pump, sending the increased flow through the same pipeline. What is the flow rate that can be expected if minor losses are ignored?

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