Operations and Supply Chain Management 9th edition
9th Edition
ISBN: 9781119320975
Author: Roberta S. Russell, Bernard W. Taylor III
Publisher: WILEY
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Textbook Question
Chapter 13, Problem 42P
KVS Pharmacy fills prescriptions fen a popular children’s antibiotic, Amoxycilin. The daily demand for Amoxycilin is
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The Corner Drug Store fills prescriptions for a popular children’s antibiotic, amoxicillin. The daily demand for amoxicillin is normally distributed, with a mean of 200 ounces and a standard deviation of 80 ounces. The vendor for the pharmaceutical firm that supplies the drug calls the drugstore pharmacist every 30 days to check the inventory of amoxicillin. During a call, the druggist indicated that the store had 60 ounces of the antibiotic in stock. The lead time to receive an order is 4 days. Determine the order size that will enable the drugstore to maintain a 95% service level.
Daily demand for a type of sandwich sold at DoorRed Cafe (DRC) is normally distributed with a mean of 65 and a standard deviation of 27. DRC orders the sandwiches from a wholesaler (everyday morning before 5:30 AM) at a wholesale price of $4 per sandwich and sells them at a retail price of $7 per sandwich. Pursuant to the contract between DRC and its wholesaler, the transportation cost is currently borne by the wholesaler. The wholesaler does not take back any unsold sandwiches. However, DRC can sell any unsold inventory at a discounted price of $3 after 5:00 PM every day.
d) Now suppose that the contract between DRC and its wholesaler expires and pursuant to the new contract, if DRC orders more than 56 sandwiches (anything more than or equal to 57), the transportation cost is no longer borne by the wholesaler and DRC will have to pay $30 for transportation. If DRC orders less than or equal to 56, the transportation cost for DRC is still zero. What is DRC’s optimal order quantity for…
Drug Inc. sells a high runner product that is ordered every 20 days when a sales person visits from one of the pharmaceutical companies. This product has an average daily demand of 1,500 units. The standard deviation of daily demand was calculated from evaluating data over the past three months and was found to be 550 units. Once an order is started, it takes seven days to arrive. The company would like to satisfy 95 percent of their demand. The sales person just arrived, and there are currently 10,000 units in warehouse.
How many units should be ordered during that Time Period? Formula = Reorder point (time period) – On hand inventory
Chapter 13 Solutions
Operations and Supply Chain Management 9th edition
Ch. 13.S - Prob. 1QCh. 13.S - How are steady-state results achieved in a...Ch. 13.S - Prob. 3QCh. 13 - Describe the difference between independent and...Ch. 13 - Distinguish between a fixed-order-quantity system...Ch. 13 - Discuss customer service level for an inventory...Ch. 13 - Explain the ABC inventory classification system...Ch. 13 - Identify the two basic decisions addressed by...Ch. 13 - Describe the major cost categories used in...Ch. 13 - Explain how the order quantity is determined using...
Ch. 13 - What are the assumptions of the basic EOQ model,...Ch. 13 - How are the reorder point and lead lime related in...Ch. 13 - Describe how the production quantity model differs...Ch. 13 - How must the application of the basic EOQ model be...Ch. 13 - Why do the basic EOQ model variations not include...Ch. 13 - In the production quantity EOQ model, what would...Ch. 13 - Explain in general terms how a safety stock level...Ch. 13 - Explain the difference between a single-stage...Ch. 13 - AV City stocks and sells a particular brand of...Ch. 13 - AV City (Problem 13.1) assumed with certainty that...Ch. 13 - A firm is faced with the attractive situation in...Ch. 13 - The Sofaworld Company purchases upholstery...Ch. 13 - The Wallace Stationery Company purchases paper...Ch. 13 - The Ambrosia Bakery makes calms for freezing and...Ch. 13 - The EastCoasters Bicycle Shop operates 364 days a...Ch. 13 - The Chemeo Company uses a highly toxic chemical in...Ch. 13 - The Food Place Supermarket stocks Munehkin...Ch. 13 - Kroft Foods makes cheese to supply to stores in...Ch. 13 - The Shotz Brewery produces an ale that it stores...Ch. 13 - Tradewinds Imports is an importer of ceramics from...Ch. 13 - JAL Trading is a Hong Kong manufacturer of...Ch. 13 - In Problem 12.1 in Chapter 12, the Hartley-Davis...Ch. 13 - In Problem 12-2 in Chapter 12, Carpel City orders...Ch. 13 - In Problem 12.47 in Chapter 12, Delaplane...Ch. 13 - The Paramount Paper company produces paper from...Ch. 13 - Kellys Tavern serves Shamrock draft beer to its...Ch. 13 - The daily demand for Ironcoat paint at the Top...Ch. 13 - IM Systems assembles microcomputers from genetic...Ch. 13 - IM Systems assembles microcomputers from generic...Ch. 13 - KVS Pharmacy fills prescriptions fen a popular...Ch. 13 - Food Place Market stocks frozen pizzas in a...Ch. 13 - The Mediterranean Restaurant stocks a red Chilean...Ch. 13 - The Aztec Company stock a variety of parts and...Ch. 13 - The EastCoasters Bicycle Shop stocks bikes;...Ch. 13 - Tara McCoy is the office administrator for the...Ch. 13 - The concession stand at the Shelby High School...Ch. 13 - The Instant Paper Clip Office Supply Company...Ch. 13 - The Texas Gladiators Apparel Store The Texas...Ch. 13 - Pharr Foods Company Pharr Foods Company produces a...
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- Annual demand is 16000 units, cost per order is $75 and carrying cost per unit as a percentage is 10%. The company works 250 weeks a year; the lead-time on all orders placed is 6 working days. Assuming constant lead-time demand, and a unit cost of $45 what is the economic order quantity? What is the reorder point. If lead-time demand shows variability that follows a normal distribution with a mean μ =420 and a standard deviation σ =20, what will the revised reorder point if two stock-outs (shortages) are allowed? What is the company’s reorder point if the probability of a stock-out on any cycle is restricted to 0.05?arrow_forwardDaily demand for fresh cauliflower in the ZZ-Warehouse store follows normal distribution with mean 100 cartons and s.d. 20 cartons. The ZZ-Warehouse buys at a cost of $50.00 per carton, sells it for $70.00 per carton. Unsold cartons are sold for $20.00 per carton. Cost of shortage = 70-50 = 20; cost of excess = 50-20 = 30; Ratio using (20.1), the service level = (20/(20+30))= 0.4 What is the optimal order quantity, using the single period – continuous demand model? a. 105 b. 95 c. 110 d. 100 e. 80arrow_forward14. 12 The purchasing manager for the Atlantic Steel Company must determine a policy for ordering coal to operate 12 converters. Each converter requires exactly 5 tons of coal per day to operate, and the firm operates 360 days per year. The purchasing manager has determined that the ordering cost is $80 per order and the cost of holding coal is 20% of the average dollar value of inventory held. The purchasing manager has negotiated a contract to obtain the coal for $12 per ton for the coming year. a. Determine the optimal quantity of coal to receive in each order. (Ans: 1200 tons) b. Determine the total inventory-related costs associated with the optimal ordering policy (do not include the cost of the coal). (Ans: TC= $2880) c. If 5 days of lead time are required to receive an order of coal, how much coal should be on hand when an order is placed? (Ans= R=300 tons)arrow_forward
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- Demand in each period is normally distributed with a mean of 100 and standard deviation of 50. Assuming demand across periods are independent, what is the standard deviation of the total demand over 4 periods?arrow_forwardAlgro Inc. keeps a wide range of parts and materials on hand for use in its production processes. Management has recently had difficulty managing parts inventory as demand for its finished goods has increased; they frequently run out of some critical parts while having an endless supply of others. They would like to classify their parts inventory according to the ABC approach to better control inventory. The following is a list of parts, along with their annual usage and unit value: Item Annual Unit Item Annual Unit Number Usage Cost Number Usage Cost 1 36 $350 2 510 30 3 50 23 4 300 45 5 18 1900 6 500 8 7 710 4 8 80 26 9 344 28 10 67 440 11 510 2 12 682 35 13 1216 95 50 14 10 3 15 820 1 KARAN2222222222 16 60 $610 17 120 20 18 270 15 19 45 50 20 19 3200 21 910 3 12 4750 23 30 2710 24 24 1800 25 870 105 26 244 30 27 750 15 28 45 110 29 46 160 30 165 25 a. Classify the inventory items according to the ABC approach using the dollar value of annual demand. b. Clearly explain why you…arrow_forwardYou are a newsvendor selling the New York Times every morning. Before you get to work, you buy the day’s newspaper for $0.90 a copy. You sell a copy of the New York Times for $4.0. Daily demand is distributed normally with a mean of 130 and a standard deviation of 20. At the end of each morning, any leftover copies can be sold to a recycling center for $0.10. How many copies of the New Yorkarrow_forward
- Last year the retailer's weekly variance of demand was 190 units. The variance of orders was 480, 590, 730, and 1,380 units, for the retailer, wholesaler, distributor, and manufacturer, respectively (Note that the variance of orders equals the variance of demand for that firm's supplier) a) The bullwhip measure for the retailer is. (Enter your response rounded to two decimal places) b) The bullwhip measure for the wholesaler is c) The bullwhip measure for the distributor is (Enter your response rounded to two decimal places) (Enter your response rounded to two decimal places) d) The bullwhip measure for the manufacturer is (Enter your response rounded to two decimal places) e) In this supply chain, the appears to be contributing the most to the bullwhip effect, Enter your answer in each of the answer boxes javascript doExercise(10) This workstation has a time use limit ofarrow_forwardA retailer uses a periodic review order-up-to model to control the inventory of one of its high volume products. Average demand is 2580 units per week with a standard deviation of 1270. The review period is 5 weeks, the lead time is 11 weeks, and the safety factor used is 0.61. How many stockouts should the retailer expect for this product next year?arrow_forwardDan's Independent Book Store is trying to decide how many copies of a book to purchase at the start of the upcoming selling season. The book retails at $28.00. The publisher sells the book to Dan at $20.00. Dan will dispose of all of the unsold copies of the book at 50% off the retail price, at the end of the season. Dan estimates that demand for this book during the season is normal with a mean of 1000 and a standard deviation of 250. The publisher is thinking of offering the following scheme to Dan. At the end of the season, they will buy back unsold copies at a pre-determined price of $17.00. However, Dan would have to bear the costs of shipping unsold copies back to the publisher at $1.00 per copy. What is the quantity that Dan should order, to maximize his expected profits?arrow_forward
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