Question: (a) Use the northwest-corner method to find an initial feasible solution to the following problem. What must you do before beginning the solution steps? (b)

(a) Use the northwest-corner method to find an initial feasible solution to the following problem. What must you do before beginning the solution steps?
(b) Use the intuitive lowest-cost approach to find an initial feasible solution. Is this approach better than the northwest-corner method?
(c) Find the optimal solution using the stepping-stonemethod.

From c $12 s 9 $14 70 Supply 100 $10 $17 5 Demand 50 80

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