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Hi there.
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So for this problem, we are told that an oil company has two refineries.
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Now, refinery a then produces 200 barrels of high -grade oil.
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So high -grade oiled is 200.
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Medium -grade oiled is 300.
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And low -grade oil is equal to 200.
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Now, in the case of refinery b, we have, for high -rate -oiled, it produces 100.
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For medium, it produces 100, and for low, it produces 100.
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200.
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Now for the first one, the cost of production is $12 ,000.
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And for the refinery p, the total cost of production is 10 ,000 to operate.
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So with that information, we know that the company must produce at least to 800 barrels of high grade oil.
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So it must be, this value must be greater or just put in here.
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Let me just put in here.
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Greater or equal to 800.
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For the medium case, it must produce 900 barrels, greater or equal to 900.
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And for the low case, it should.
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Should produce 1 ,000 barrels.
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So with that, we will have, we are going to set that ed is the number of days that refinery a is in operation, and y is the number of days of that that refinery b is in operation.
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So with that in the information given, we can set the following relations, so that is 200.
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So this is for the case of high rate oil...