## (solution) During the next three months, Steelco faces the following demands for steel: 100 tons (month 1);...

During the next three months, Steelco faces the following demands for steel: 100 tons (month 1); 200 tons (month 2); 50 tons (month 3). During any month, a worker can produce up to 15 tons of steel. Each worker is paid \$5,000 per month. Workers can be hired or fired at a cost of \$3,000 per worker fired and \$4,000 per worker hired (it takes 0 time to hire a worker). The cost of holding a ton of steel in inventory for one month is \$100. Demand may be backlogged at a cost of \$70 per ton month. That is, if 1 ton of month 1 demand is met during month 3, then a backlogging cost of \$140 is incurred. At the beginning of month 1, Steelco has 8 workers. During any month, at most 2 workers can be hired. All demand must be met by the end of month 3. The raw material used to produce a ton of steel costs \$300. Formulate an LP to minimize Steelco’s costs.

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Sep 13, 2020

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