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Operations Management 생산운영관리 krajewski ritzman malhotra 9장 연습문제풀이
4. Southern Markets, Inc., is considering the use of ABC analysis to focus on the most critical SKUs in its inventory. Currently, there are approximately 20,000 different SKUs with a total dollar usage of $10,000,000 per year.
9. Terminator, Inc., maufactures a motorcycle part in lots of 250 units. The raw materials cost for the part is $150, and the value added in manufacturing 1 unit from its components is $300, for a total cost per completed unit of $450. The lead time to make the part is 3weeks, and the annual demand is 4,000 units. Assume 50 working weeks per year.
14. In a continuous review inventory system, the lead time for door knobs is 5 weeks. The standard deviation of demand during the lead time is 85 units. The desired cycle service level is 99 percent. The supplier of door knobs streamlined its operations and now quotes a one-week lead tim

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Operations Management 생산운영관리 krajewski ritzman malhotra 9장 연습문제풀이
4. Southern Markets, Inc., is considering the use of ABC analysis to focus on the most critical SKUs in its inventory. Currently, there are approximately 20,000 different SKUs with a total dollar usage of $10,000,000 per year.
9. Terminator, Inc., maufactures a motorcycle part in lots of 250 units. The raw materials cost for the part is $150, and the value added in manufacturing 1 unit from its components is $300, for a total cost per completed unit of $450. The lead time to make the part is 3weeks, and the annual demand is 4,000 units. Assume 50 working weeks per year.
14. In a continuous review inventory system, the lead time for door knobs is 5 weeks. The standard deviation of demand during the lead time is 85 units. The desired cycle service level is 99 percent. The supplier of door knobs streamlined its operations and now quotes a one-week lead time. How much can safety stock be reduced without reducing the 99 percent cycle-service level?
19. The farmers Wife is a country store specializing in knickknacks suitable for a farm-house decor. One item experiencing a considerable buying frenzy is a miniature Holstein cow. Average weekly demand is 30 cows, with a standard deviation of 5 cows. The cost to place a replenishment order is $15 and the holding cost is $0.75/cow/year. The supplier, however, is in China. The lead time for new order is 8 weeks, with a standard deviation of 2 weeks. The Farmers Wife, which is open only 50 weeks a year, wants to develop a continuous review inventory system for this item with a cycle-service level of 90 percent.
24. Wood County Hospital consumes 1,000 boxes of bandages per week. The price of bandages is $35 per box, and the hospital operates 52 weeks per year. The cost of processing an order is $15, and the cost of holding one box for a year is 15 percent of the value of the material.

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