Question: (20 Points) Use the MIP branch-and-bound algorithm to solve the following MIP problem. Identify each sub-problem and apply fathoming rules of branch-and-bound algorithm to reach

(20 Points) Use the MIP branch-and-bound

(20 Points) Use the MIP branch-and-bound algorithm to solve the following MIP problem. Identify each sub-problem and apply fathoming rules of branch-and-bound algorithm to reach to the solution. Solve the LP relaxation of each sub-problem using excel solver and submit your excel file. The excel file should contain a worksheet for each sub- problem. Maximize Z= 23x1 + 22x2 + 22x3 + 20x4, subject to x1 + 3x2 + 2x3 + x4

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