The diagram below depicts a system of aqueducts that originate at three rivers (nodes R1, R2, R3) and terminate at a major city (Node T), where the other nodes are junction points in the system. The diagram also shows the maximum amount of water that can be pumped through each aqueduct per day. The city manager wants to determine a flow plan that will maximize the flow of water to the city. Formulate and solve a spreadsheet model for this problem. Name your spreadsheet Three River and upload to canvas. Name your cells to get full credit. Sources Transshipment Nodes Sink R1 [75] [60] [65] [45] [120] [40] (70] R2 B E [50] [55] [190] [60] [45] [80] (70] R3 F [130] [70] [90]