A cellular phone company wants to locate two new communications towers to cover 4 regions.The company wants to minimize the cost of installing the two towers.The regions that can be covered by each tower site are indicated by a 1 in the following table:
Tower Sites
MIN: 200 X1 + 150 X2 + 190 X3 + 250 X4
Subject to: X2 + X4 ? 1
X1 + X3 + X4 ? 1 X1 + X2 + X3 ? 1 X1 + X4 ? 1
X1 + X2 + X3 + X4 = 2 Xi = 0,1
Based on this ILP formulation of the problem and the solution X1,X2,X3,X4)= 1,1,0,0)what values should go in cells B6:G14 of the following Excel spreadsheet?
Correct Answer:
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