permanent workforce up to this level?Why or why not? c.Determine a production plan that meets the demand using only regular-time employees and the total cost of that plan. d.Determine a production plan that utilizes only additional employee to absorb excess demand and the cost of that plan 5.CH4 A metal fabrication shop has a single punch press.There are currently three parts that the shop has agreed to produce that require the press,and it appears that they will be supplying these parts well into the future.You may assume that the press is the critical resource for these parts,so that we need not worry about the interaction of the press with the other machines in the shop.The relevant information here is Part Annual Contracted Setup Cost Cost Production number Amount (demand) (per unit) Rate (per year) 1 2,500 $80 $16 45,00 2 5,500 120 18 40,00 3 1,450 60 22 26,00 Holding costs are based on an 18 percent annual interest rate,and the products are to be produced in sequence on a rotation cycle.Setup times can be considered negligible a.What is the optimal time between setups for part number 1? b.What percentage of the time is the punch press idle,assuming an optimal rotation cycle policy? c.What are the optimal lot sizes of each part put through the press at an optimal solution? d.What is the total annual cost of holding and setup for these items on the punch press, assuming an optimal rotation cycle? 6.CH5 Disk Drives Limited (DDL)produces a line of internal Winchester disks for microcomputers.The drives use a 3.5-inch platter that DDL purchase from an outside supplier. Demand data and sales forecasts indicate that the weekly demand for the platters seems to be closely approximated by a normal distribution with mean 38 and variance 130.The platters require a three-week lead time for receipt.DDL has been using a 40 percent annual interest charge to compute holding costs.The platters cost $18.80 each,order cost is $75.00 per order, and the company is currently using a stock-out cost of $400.00 per platter.(Because the industry is so competitive,stock-outs are very costly.) a.Because of a prior contractual agreement with supplier,DDL must purchase the platters in lots of 500.What is the reorder point that it should be using in this case? b.When DDL renegotiates its contract with the supplier,what lot size should it write into the agreement? c.How much of a penalty in terms of setup,holding,and stock-out cost is DDL paying for contracting to buy too large a lot? d.DDL's president is uncomfortable with the $400 stock-out cost and decides to substitute a 99 percent fill rate criterion.If DDL used a lot size equal to the EOQ,what would its reorder point be in this case?Also,find the imputed cost of shortage. 我承诺，我将严 3 格遵守考试纪律。 题号 承诺人： 得分 批阅人（流水阅 卷数师签名处)A 卷 总 3 页 第 页 permanent workforce up to this level? Why or why not? c. Determine a production plan that meets the demand using only regular-time employees and the total cost of that plan. d. Determine a production plan that utilizes only additional employee to absorb excess demand and the cost of that plan. 5. CH4 A metal fabrication shop has a single punch press. There are currently three parts that the shop has agreed to produce that require the press, and it appears that they will be supplying these parts well into the future. You may assume that the press is the critical resource for these parts, so that we need not worry about the interaction of the press with the other machines in the shop. The relevant information here is Part number Annual Contracted Amount (demand) Setup Cost Cost (per unit) Production Rate (per year) 1 2,500 $80 $16 45,00 2 5,500 120 18 40,00 3 1,450 60 22 26,00 Holding costs are based on an 18 percent annual interest rate, and the products are to be produced in sequence on a rotation cycle. Setup times can be considered negligible. a. What is the optimal time between setups for part number 1? b. What percentage of the time is the punch press idle, assuming an optimal rotation cycle policy? c. What are the optimal lot sizes of each part put through the press at an optimal solution? d. What is the total annual cost of holding and setup for these items on the punch press, assuming an optimal rotation cycle? 6. CH5 Disk Drives Limited (DDL) produces a line of internal Winchester disks for microcomputers. The drives use a 3.5-inch platter that DDL purchase from an outside supplier. Demand data and sales forecasts indicate that the weekly demand for the platters seems to be closely approximated by a normal distribution with mean 38 and variance 130. The platters require a three-week lead time for receipt. DDL has been using a 40 percent annual interest charge to compute holding costs. The platters cost $18.80 each, order cost is $75.00 per order, and the company is currently using a stock-out cost of $400.00 per platter. (Because the industry is so competitive, stock-outs are very costly.) a. Because of a prior contractual agreement with supplier, DDL must purchase the platters in lots of 500. What is the reorder point that it should be using in this case? b. When DDL renegotiates its contract with the supplier, what lot size should it write into the agreement? c. How much of a penalty in terms of setup, holding, and stock-out cost is DDL paying for contracting to buy too large a lot? d. DDL’s president is uncomfortable with the $400 stock-out cost and decides to substitute a 99 percent fill rate criterion. If DDL used a lot size equal to the EOQ, what would its reorder point be in this case? Also, find the imputed cost of shortage. 题号 1 2 3 4 5 6 得分 批阅人(流水阅 卷教师签名处) 我承诺，我将严 格遵守考试纪律。 承诺人：