The Copperfield Mining Company owns two mines, which produce three grades of ore: high, medium, and low. The company has a contract to supply a smelting company with 12 tons of high-grade ore, 8 tons of medium-grade ore, and 24 tons of low-grade ore. Each mine produces a certain amount of each type of ore each hour of operation. The company has developed the following linear programming model to determine the number of hours to operate each mine (X and Y) so that contracted obligations can be met at the lowest cost: Ore Grades Mine X Mine Y High Grade 6 2 Medium Grade 2 2 Low Grade 4 12 Cost of Operation per hour ($) 200 160
The Copperfield Mining Company owns two mines, which produce three grades of ore: high, medium, and low. The company has a contract to supply a smelting company with 12 tons of high-grade ore, 8 tons of medium-grade ore, and 24 tons of low-grade ore. Each mine produces a certain amount of each type of ore each hour of operation. The company has developed the following linear programming model to determine the number of hours to operate each mine (X and Y) so that contracted obligations can be met at the lowest cost: Ore Grades Mine X Mine Y High Grade 6 2 Medium Grade 2 2 Low Grade 4 12 Cost of Operation per hour ($) 200 160
Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter2: Introduction To Spreadsheet Modeling
Section: Chapter Questions
Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...
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The Copperfield Mining Company owns two mines, which produce three grades of ore: high, medium, and low. The company has a contract to supply a smelting company with 12 tons of high-grade ore, 8 tons of medium-grade ore, and 24 tons of low-grade ore. Each mine produces a certain amount of each type of ore each hour of operation. The company has developed the following linear programming model to determine the number of hours to operate each mine (X and Y) so that contracted obligations can be met at the lowest cost:
|
Ore Grades |
Mine X |
Mine Y |
|
High Grade |
6 |
2 |
|
Medium Grade |
2 |
2 |
|
Low Grade |
4 |
12 |
|
Cost of Operation per hour ($) |
200 |
160
|
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