Standard Pump recently won a $14 million contract with the U.S. Navy to supply 2,000 custom-designed submersible pumps over the next four months. The contract calls for the delivery of 200 pumps at the end of May, 600 pumps at the end of June, 600 pumps at the end of July, and 600 pumps at the end of August. Standard's production capacity is 500 pumps in May, 400 pumps in June, 800 pumps in July, and 500 pumps in August. Management would like to develop a production schedule that will keep monthly ending inventories low while at the same time minimizing the fluctuations in inventory levels from month to month. In attempting to develop a goal programming model of the problem, the company's production scheduler let xm denote the number of pumps produced in month m and sm denote the number of pumps in inventory at the end of month m. Here, m = 1 refers to May, m = 2 refers to June, m = 3 refers to July, and m = 4 refers to August. Management asks you to assist the production scheduler in model development. (a) Using these variables, develop a constraint for each month that will satisfy the following demand requirement. May Beginning Inventory + Current Production Ending Inventory. This Month's Demand
Standard Pump recently won a $14 million contract with the U.S. Navy to supply 2,000 custom-designed submersible pumps over the next four months. The contract calls for the delivery of 200 pumps at the end of May, 600 pumps at the end of June, 600 pumps at the end of July, and 600 pumps at the end of August. Standard's production capacity is 500 pumps in May, 400 pumps in June, 800 pumps in July, and 500 pumps in August. Management would like to develop a production schedule that will keep monthly ending inventories low while at the same time minimizing the fluctuations in inventory levels from month to month. In attempting to develop a goal programming model of the problem, the company's production scheduler let xm denote the number of pumps produced in month m and sm denote the number of pumps in inventory at the end of month m. Here, m = 1 refers to May, m = 2 refers to June, m = 3 refers to July, and m = 4 refers to August. Management asks you to assist the production scheduler in model development. (a) Using these variables, develop a constraint for each month that will satisfy the following demand requirement. May Beginning Inventory + Current Production Ending Inventory. This Month's Demand
Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter2: Introduction To Spreadsheet Modeling
Section: Chapter Questions
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Step 1: Given information in the question.
VIEWStep 2: a. Develop a constraint for each month.
VIEWStep 3: b. Write goal equations that represent the fluctuations in the production level
VIEWStep 4: c. Develop goal equations with a target of zero for the ending inventory in May, June, and July.
VIEWStep 5: d. Develop production capacities for each month.
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