Maple Leaf Foundary, owned by Ahmet Satir, produces cast-iron ingots according to a 3-month capacity plan. The cost of labor averages $100 per regular shift hour and $140 per overtime (O.T.) hour. Inventory carrying cost is thought to be $4 per labor-hour of inventory carried. There are 50 direct labor hours of inventory left over from March. For the next 3 months, demand and capacity (in labor-hours) are as follows:

Develop an aggregate plan for the 3-month period using the transportation method.

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MONTH April May June CAPACITY REGULAR LABOR (HOURS) 2,880 2,780 2,760 O.T. LABOR (HOURS) 355 315 305 DEMAND 3,000 2,750 2,950