Check my work Resources: A, B, C (one each) Availability: 2,500 min./week Operating expense: $12,000/week Product M $190/unit 100 units/week Product N $200/unit 60 units/week 20 min./unit 20 min./unit 15 min./unit B 10 min./unit B 10 min./unit RM-1 $60/unit RM-2 $40/unit RM-3 $40/unit Process times for each task are shown in the diagram. Each machine is available 2,500 minutes per week. There are no "Murphys" (major opportunities for the system to foul up). Setup and transfer times are zero. Demand is constant. Operating expenses (including labor) total a constant $12,000 per week. Raw materials are not included in weekly operating expenses. a. Which machine is the constraint in this plant? O Machine A Machine C O Machine B b. Which product mix provides the highest gross profit? (Hint: consider raw material cost but not operating expense) Product mix Product M 90 units Product N 120 units c. What is the maximum weekly net profit this plant can earn using the product mix from Part b? (Hint: consider operating expense and raw material cost) Weekly net profit