Problem 11-5 (Static) Manager T. C. Downs of Plum Engines, a producer of lawn mowers and leaf blowers, must develop an aggregate plan given the forecast for engine demand shown in the table. The department has a regular output capacity of 130 engines per month. Regular output has a cost of $60 per engine. The beginning inventory is zero engines. Overtime has a cost of $90 per engine. Month 1 2 3 4 5 6 7 Forecast 120 135 140 120 125 125 140 8 135 Total 1,040