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The Following ILP Is Being Solved by the Branch and Bound

question 12

Essay

The following ILP is being solved by the branch and bound method.You have been given the initial relaxed IP solution.Complete the entries for the 3 nodes and label the arcs when you branch on X1.
MAX: 35 X1 + 45 X2
Subject to: 35 X1 + 55 X2 ≤ 250
65 X1 + 25 X2 ≤ 340
X1,X2 ≥ 0 and integer
Initial solution
X1 = 4.6X2 = 1.6 Obj = 233.9 The following ILP is being solved by the branch and bound method.You have been given the initial relaxed IP solution.Complete the entries for the 3 nodes and label the arcs when you branch on X<sub>1</sub>. MAX: <sup>35 X</sup><sub>1 </sub><sup>+ 45 X</sup><sub>2</sub> Subject to: <sup>35 X</sup><sub>1 </sub><sup>+ 55 X</sup><sub>2 </sub><sup>≤ 250</sup> 65 X<sub>1 </sub>+ 25 X<sub>2 </sub>≤ 340 X<sub>1</sub>,X<sub>2 </sub>≥ 0 and integer Initial solution X<sub>1 </sub>= 4.6X<sub>2 </sub>= 1.6 Obj = 233.9


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