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A steel mill produces two types of steel alloy: Boral and Chromal. Production of each alloy requires three processes: Box anneal, Cold Roll, and Strand

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A steel mill produces two types of steel alloy: Boral and Chromal. Production of each alloy requires three processes: Box anneal, Cold Roll, and Strand anneal. Production Capacities are: Box anneal: 4,000 hours/month Cold Roll: 500 hours/month Strand anneal: 1,00 hours/month Production rates in tons per hour are: Box Cold roll pass 1 Strand anneal Cold roll pass 2 anneal Boral 4 72 11 36 Chromal 2 Not required 20 24 The maximum demand for Boral is 10,500 tons/month and for Chromal 6,000 tons/month. The contributions/ton are Boral: $25, and Chromal: $35. What combination of Boral and Chromal maximizes total monthly contribution?C D E F G H K Model 9 Processes Production capacity Total Contribution 10 =D25*J13+D26*J14 11 Box anneal 4000 12 Cold Roll pass 500 Amounts Produced 13 Strand anneal 1000 Boral 10500 14 Chromal 6000 15 16 Product Composition 17 Resources Used Limits 18 Box anneal Cold Roll pass 1 Strand anneal Cols rool pass 2 Box anneal =J13*D19+J14*D20 =D11 19 Boral 4 72 11 36 Cold Roll pass =J13*(E19+G19)+J14* =D12 20 Chromal 2 20 24 Strand anneal =J13*F19+J14*F20 =D13 21 Production capacity 4000 500 1000 22 23 Contribution per ton of Output 24 25 Boral 25 26 Chromal 35 27 28

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