Question
Mens Wear, Inc., a nationally known manufacturer of menswear, produces four varieties of ties. One is an expensive all-silk tie, one is an all-polyester tie,
Mens Wear, Inc., a nationally known manufacturer of menswear, produces four varieties of ties. One is an expensive all-silk tie, one is an all-polyester tie, and two are blends of polyester and cotton. The first table below illustrates the cost and availability (per monthly production planning period) of the three materials used in the production process.
The company has fixed contracts with several major department store chains to supply ties each month. The contracts require that Mens Wear supply a minimum quantity of each tie but allow for a larger demand if Mens Wear chooses to meet that demand. (Most of the ties are not shipped with the name Mens Wear on their label, incidentally, but with private stock labels supplied by the stores.) The second table below summarizes the contract demand for each of the four styles of ties, the selling price per tie, and the fabric requirements of each variety. The production process for all ties is almost fully automated, and Mens Wear uses a standard labor cost of $0.75 per tie for any variety.
Mens Wear must decide on a policy for product mix in order to maximize its monthly profit. What is the optimal monthly profit for Mens Wear and how many ties of each type should they produce per month?
Material | Cost Per Yard | Material Available Per Month (yards) |
Silk | $20 | 1,000 |
Polyester | $6 | 2,000 |
Cotton | $9 | 1,250 |
Variety of Tie | Selling Price Per Tie | Monthly Contract Minimum | Monthly Demand | Total Material Required Per Tie (yards) | Material Requirements |
All silk | $6.70 | 6,000 | 7,000 | 0.125 | 100% silk |
All polyester | $3.55 | 10,000 | 14,000 | 0.08 | 100% polyester |
Poly-cotton blend 1 | $4.31 | 13,000 | 16,000 | 0.10 | 50% polyester/50% cotton |
Poly-cotton blend 2 | $4.81 | 6,000 | 8,500 | 0.10 | 30% polyester/70% cotton |
Develop answers to each of the questions below related to the procedure Ten Steps to Solve Decision Analysis Problems. Feel free to add more space as needed to respond to each of the ten questions.
Ten Steps to Solve Decision Analysis Problems
Must Include Excel Spreadsheet
Put yourself into the problem.
(a)What does my job involve?
(b)What decisions do I need to make?
(c)What information do I need to solve this decision problem?
On what basis will I be evaluated as a manager in this problem situation?
Select a quantitative tool to use to assist in making the decision.
Write out the objective function in words.
Write out the restrictions in words.
Define the decision variables. (Relate to the decisions you need to make based on step 1 above.)
Develop an objective function based on step 4 above.
Develop constraints based on step 5 above.
Solve the decision problem utilizing spreadsheet analysis.
Interpret the results in words (i.e., how many of each variety of tie do you recommend that Mens Wear produce per month and what will be the expected profit per month from this plan).
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