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4. Consider a farmer, who has 500 acres of land, and rase grain, corn and sugar beet. In winter he wants to decide how much land he should devote for each crop in order to get maximum profit in the next autumn. The farmer needs 200 tons of wheat and 240 tons of corn to feed his cattle. These amounts can be either raised by himself or bought from an external wholesaler. If more than this amount is produced, the exceeded part will be sold. Selling prices are $170 and $150 per ton of wheat and corn, respectively. The purchase prices are 40% more than the selling price. Sugar beet sells at $36 per ton. However, there is a quota on sugar beet production, any amount in excess of the quota can be sold only at $10 per ton. The quota this year is 6000 tons. Based on past experience, the farmer knows that the mean yield on his land is roughly 2.5 tons, 3 tons and 10 tons per acre for wheat, corn and sugar beets, respectively. And the planting costs are $150, $230 and $260 per acre for wheat, corn and sugar, respectively. Develop and solve the corresponding linear programming model.
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Page No: Date lheot com Sugar bts ield Tlace) 3x 2. S 3 atre) LSO23o 26 o purchase price (EIT) 23 210 -to Too 2 40 Loe Lolve

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