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Decorum, Inc., manufactures high-end ceiling fans. Their sales are seasonal with higher demand in the warmer summer months. Typically, sales average 400 units per month.

Decorum, Inc., manufactures high-end ceiling fans. Their sales are seasonal with higher demand in the warmer summer months. Typically, sales average 400 units per month. However, in the hot summer months (June, July, and August), sales spike up to 600 units per month. Decorum can produce up to 500 units per month at a cost of $300 each. Decorum sells the ceiling fans for $500 each. Decorum can carry inventory from one month to the next, but at a cost of $20 per ceiling fan per month. Decorum has 25 units in inventory at the start of January.

  1. what decisions need to be made
    1. total monthly proifits
    2. total number of fans to produce
    3. number of workers to hire
    4. number of fans to produce each month
  2. Given that selling price and cost are available, what should the objective be in our optimization model?
    1. maximize production
    2. minimize total cost
    3. maximize total profit
    4. maximize total revenue
    5. minimize inventory

Suppose Decorum makes 450 ceiling fans in January and 500 in February. Calculate by hand the following costs. (Note that holding costs are charged for the fans left in inventory at the end of the month. For instance, if Decorum has 25 fans at the beginning of a month, it makes 450 fans in that month, and it sells 400 fans in that same month, then there are 75 fans left at the end of the month, for which it needs to charge $20 per fan for holding cost. The 75 fans become the beginning inventory for the next month.) In January the regular production cost is $135,000 and a holding cost total of $1500. For Febuary the regular production cost is $150,000 and a holding cost total of $3,500. ssuming Decorum must produce enough ceiling fans to meet demand, how many ceiling fans should Decorum produce each month over the course of the next year (i.e., January to December) to optimize its objective?

Make a rough sketch of a spreadsheet model, with blocks laid out for the data cells, changing cells, output cells, and objective cell. Build a spreadsheet model for January and February and thoroughly test the model. Build and solve a linear programming spreadsheet model for the full problem (i.e., January to December).

What is the value of the objective function for the optimal solution?

(please give me a value and not just explain how to do it on excel because my solver is not working and I am in desperate need)

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