An electronics company has manufacturing plants at locations A, B, and C. The company ships a computer component manufactured in these plants to warehouses at locations X, Y, and Z. Unit shipping costs in $, plant capacities, and demand requirements from the warehouses are given in the following table:

1. Use the northwest corner rule to find an initial basic feasible solution. What is the total cost?

2. Use the matrix least cost method to find an initial basic feasible solution. What is the total cost?

3. Use the stepping stone method to find the optimal solution. What is the total cost?

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To Capacity 300 From A 15 19 11 13 17 260 25 23 15 190 280 Warehouse Demand 250 750 220