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QUESTION 12 A mining company owns 3 different mines (North, South, and West mines) that produce 3 different grades of iron (low-grade, medium-grade, and high-grade). The company requires at least 25 tons of low-grade Iron, 18 tons of medium-grade iron, and 12 tons of high-grade iron in order to meet its supply requirements. The North Mine costs $10,000 per day of mining and in a day of mining it produces 4 tons of low-grade iron, 1 ton of medium-grade iron, and 1 ton of high-grade iron. The South Mine costs $15,000 per day of mining and in a day of mining it produces 1 ton of low-grade iron, 3 tons of medium grade iron, and 2 tons of high-grade iron. The West Mine costs $18,000 per day of mining and in a day of mining it produces 3 tons of low-grade iron, 3 tons of medium-grade iron, and no high-grade iron. Suppose x is the number of days that the North Mine is operational, y is the number of days that the South Mine is operational, and z is the number of days that the West Mine is operational. If the company wants to minimize its total cost while satisfying its supply requirements, fill in the blanks below to formulate this situation as a linear program. (Make sure to input only numbers, do not include any dollar signs, commas, periods, or other symbols in your answers) Minimize x + y+ Subject to: y+ z2 25 x+ y+ z2 18 y+ z212

QUESTION 12 A mining company owns 3 different mines (North, South, and West mines) that produce 3 different grades of iron (low-grade, medium-grade, and high-grade). The company requires at least 25 tons of low-grade Iron, 18 tons of medium-grade iron, and 12 tons of high-grade iron in order to meet its supply requirements. The North Mine costs $10,000 per day of mining and in a day of mining it produces 4 tons of low-grade iron, 1 ton of medium-grade iron, and 1 ton of high-grade iron. The South Mine costs $15,000 per day of mining and in a day of mining it produces 1 ton of low-grade iron, 3 tons of medium grade iron, and 2 tons of high-grade iron. The West Mine costs $18,000 per day of mining and in a day of mining it produces 3 tons of low-grade iron, 3 tons of medium-grade iron, and no high-grade iron. Suppose x is the number of days that the North Mine is operational, y is the number of days that the South Mine is operational, and z is the number of days that the West Mine is operational. If the company wants to minimize its total cost while satisfying its supply requirements, fill in the blanks below to formulate this situation as a linear program. (Make sure to input only numbers, do not include any dollar signs, commas, periods, or other symbols in your answers) Minimize x + y+ Subject to: y+ z2 25 x+ y+ z2 18 y+ z212

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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QUESTION 12 A mining company owns 3 different mines (North, South, and West mines) that produce 3 different grades of iron (low-grade, medium-grade, and high-grade). The company requires at least 25 tons of low-grade Iron, 18 tons of medium-grade iron, and 12 tons of high-grade iron in order to meet its supply requirements. The North Mine costs $10,000 per day of mining and in a day of mining it produces 4 tons of low-grade iron, 1 ton of medium-grade iron, and 1 ton of high-grade iron. The South Mine costs $15,000 per day of mining and in a day of mining it produces 1 ton of low-grade iron, 3 tons of medium grade iron, and 2 tons of high-grade iron. The West Mine costs $18,000 per day of mining and in a day of mining it produces 3 tons of low-grade iron, 3 tons of medium-grade iron, and no high-grade iron. Suppose x is the number of days that the North Mine is operational, y is the number of days that the South Mine is operational, and z is the number of days that the West Mine is operational. If the company wants to minimize its total cost while satisfying its supply requirements, fill in the blanks below to formulate this situation as a linear program. (Make sure to input only numbers, do not include any dollar signs, commas, periods, or other symbols in your answers) Minimize x+ y+ Subject to: y+ z2 25 y+ z2 18 y+ z2 12 Click Saue and Submit to save and submit. Click Save All Answers to save all ansuwers. Save All Answe MacBook Air MacBook Air
Transcribed Image Text:QUESTION 12 A mining company owns 3 different mines (North, South, and West mines) that produce 3 different grades of iron (low-grade, medium-grade, and high-grade). The company requires at least 25 tons of low-grade Iron, 18 tons of medium-grade iron, and 12 tons of high-grade iron in order to meet its supply requirements. The North Mine costs $10,000 per day of mining and in a day of mining it produces 4 tons of low-grade iron, 1 ton of medium-grade iron, and 1 ton of high-grade iron. The South Mine costs $15,000 per day of mining and in a day of mining it produces 1 ton of low-grade iron, 3 tons of medium grade iron, and 2 tons of high-grade iron. The West Mine costs $18,000 per day of mining and in a day of mining it produces 3 tons of low-grade iron, 3 tons of medium-grade iron, and no high-grade iron. Suppose x is the number of days that the North Mine is operational, y is the number of days that the South Mine is operational, and z is the number of days that the West Mine is operational. If the company wants to minimize its total cost while satisfying its supply requirements, fill in the blanks below to formulate this situation as a linear program. (Make sure to input only numbers, do not include any dollar signs, commas, periods, or other symbols in your answers) Minimize x+ y+ Subject to: y+ z2 25 y+ z2 18 y+ z2 12 Click Saue and Submit to save and submit. Click Save All Answers to save all ansuwers. Save All Answe MacBook Air MacBook Air
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