Problem 13.18 Question Help Jose Martinez of El Paso has developed a polished stainless steel tortilla machine that makes it a "showpiece" for display in Mexican restaurants. His forecast of capacity and demand follows: Month 3 2 4 1 140 5 220 160 130 200 Demand Capacity Regular time Overtime 140 20 140 30 140 10 150 20 150 10 Subcontracting: 90 units available over the 5-month period Beginning inventory: 0 units Ending inventory required: 10 units Costs Regular-time cost per unit Overtime cost per unit Subcontract cost per unit Inventory holding cost per unit per month $80 $115 $125 $3 Assume that backorders are not permitted. Using the transportation method, the total cost of the optimal plan is $ (enter your response as a whole number). Problem 13.18 Question Help Jose Martinez of El Paso has developed a polished stainless steel tortilla machine that makes it a "showpiece" for display in Mexican restaurants. His forecast of capacity and demand follows: Month 3 2 4 1 140 5 220 160 130 200 Demand Capacity Regular time Overtime 140 20 140 30 140 10 150 20 150 10 Subcontracting: 90 units available over the 5-month period Beginning inventory: 0 units Ending inventory required: 10 units Costs Regular-time cost per unit Overtime cost per unit Subcontract cost per unit Inventory holding cost per unit per month $80 $115 $125 $3 Assume that backorders are not permitted. Using the transportation method, the total cost of the optimal plan is $ (enter your response as a whole number)