Given the following information set up the problem in a transportation table and solve for the minimum-cost plan:

Minimum total cost?

Demand 550 700 750 Capacity 500 500 500 Regular Overtime 50 50 Subcontract 120 120 100 Beginning inventory 100 Costs S 60 per unit Regular time $ 80 per unit Overtime $ 90 per unit Subcontract $ 1 per unit per month Inventory carrying cost Back-order cost S| 3 per unit per month