Question

An oil company operates two refineries in a certain city. Refinery I has an output of 200, 100, and 100 barrels of low-, medium-, and high-grade oil per day, respectively. Refinery II has an output of 100, 200, and 600 barrels of low-, medium-, and high-grade oil per day, respectively. The company wishes to produce at least 1000, 1400, and 3000 barrels of low-, medium-, and high-grade oil to fill an order. If it costs $600/day to operate Refinery I and $900/day to operate Refinery II, determine how many days each refinery should be operated to meet the production requirements at minimum cost to the company.

Refinery I ______	days
Refinery II ______	days

What is the minimum cost?___________

Answer 1

Solution:

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