Consider the following network representation of a transportation problem. 40 Let 35 Supplies Jefferson City Omaha 15 a 8 8 11 24 Des Moines X11 = amount shipped from Jefferson City to Des Moines X12 = amount shipped from Jefferson City to Kansas City X13 = amount shipped from Jefferson City to St. Louis X21 = amount shipped from Omaha to Des Moines X22 = amount shipped from Omaha to Kansas City X23 = amount shipped from Omaha to St. Louis Kansas City St. Louis 20 15 40 The supplies, demands, and transportation costs per unit are shown on the network. (a) Develop a linear programming model for this problem; be sure to define the variables in your model. Demands

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