Question: 5. Given at the right is a distribution network set up for a minimum cost flow problem. Nodes 1,2 , and 3 are supply nodes,

5. Given at the right is a distribution network set up for a minimum cost flow problem. Nodes 1,2 , and 3 are supply nodes, supplying 20,40 , and 30 units, respectively; nodes 4 and 5 are transshipmen 
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