Question: Problem 4 (40%). Answer questions for the following network. 15 D 14 12 6 20 20 2 16 15 23 E (1) Suppose the number

Problem 4 (40%). Answer questions for the

Problem 4 (40%). Answer questions for the following network. 15 D 14 12 6 20 20 2 16 15 23 E (1) Suppose the number on each are in the network is the distance of the arc. Please find a minimum spanning tree of the network. What is the total distance of the minimum spanning tree? (2) Suppose the network shown above is the pipeline network operated by the oil company Exxo 76. Each pipeline is labeled with its maximum flow rate in million cubic feet (MMct) per day. A new oil well has been constructed near A. They would like to transport oil from the well near A to their refinery at G. a) Formulate the problem of determining the maximum flow rate from A to G as a liner programming model: define the decision variables, objective function, and constraints. b) Use Excel Solver to obtain the optimal solution. Please provide an Excel Solver screen shot that shows your optimal solution to the

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