15-16 The BugOff Chemical Company has three plants and four warehouses. The Cobts, capacities, and demands are given in the blank shipment schedule in Figure 15-14. Consider cach of the following amendments independently. In each case, modify the original Figure 15-14 to construct a blank shipment schedule that ex- presses the transportation problem. (a) New Orleans cannot ship to Boston, and Memphis cannot ship to Phoenix. Denver Boston Houston Phoenix Capacity From 13 6 11 1,000 Chicago 20 5 3 9 800 Memphis 7 8 12 700 New Orleans 500 750 800 Demand 450 2,500 Blank shipment schedule for Problem 15-15 (b) At least 100 units must be shipped from Chicago to Boston. y more than 200 units may be shipped from New Orleans to Houston. linn to the three amended versi