Question: 7 8 2 5 4 1 (-5) 4 (-5) 6 (6) 6 3 3 (4) The numbers on the arcs indicate the cost of transporting

7 8 2 5 4 1 (-5) 4 (-5) 6 (6) 6 3 3 (4) The

7 8 2 5 4 1 (-5) 4 (-5) 6 (6) 6 3 3 (4) The numbers on the arcs indicate the cost of transporting 1 unit of flow on that arc. The positive (negative) numbers in the parenthesis show the supply (demand) of the nodes. The aim is to supply the demand with minimum transportation cost. Let Xij is the decision variable representing the amount of flow sent from i to j. A basic solution X12 = 5, X24 = 5, X13 = 1, X35 = 5 is given. Check whether this solution is optimal or not. If it is not optimal, find the optimal solution using network simplex method

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