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Operations Management Sustainability And Supply Chain Management Global Edition 12th Edition Jay Heizer, Barry Render, Chuck Munson - Solutions

How does the mix of Frito-Lay’s inventory differ from those at a machine or cabinet shop (a process-focused facility)?
What cost savings will Parker realize if it implements an order plan based on EOQ?
What is the optimal reorder point (ROP) for LCDs?
What is the optimal order number of LCDs that should be placed in each order?
When Kenneth suggests Lena that they should go back to weekly deliveries, Lena accepts this as long as the fixed cost is per the whole delivery (not per product). What would be the highest acceptable level on the fixed cost for Lena, if she should accept to change the terms of the contract?
Why would Kenneth not be happy with the new strategy?
How much would Lena’s new strategy save for the Acitelenacompanyon an annual basis? Assume 52 weeks per year and 5 days per week.
The Swedish company Rossons Sport sells skis end ski-equipment. They purchase skis at a price of $260 per pair and sales price is $420. Skis not sold this season can be sold early next season at a discounted price, $200. In addition they estimate the stock holding cost between seasons to be $25 per
Henrique Correa’s bakery prepares all its cakes between 4 a.m. and 6 a.m. so they will be fresh when customers arrive. Day-old cakes are virtually always sold, but at a 50% discount off the regular $10 price. The cost of baking a cake is $6, and demand is estimated to be normally distributed,
Franz Beckmann is selling sausages at the local soccer games in Pullach. History has shown that in average 190 are sold, with a standarddeviation o 34.He purchases the sausages for $0.25 and sells them for $2 each. Sausages not sold will be given away for free to the players. How many sausages
The propane reseller GasPan is during peak season selling in average 71.9 propane cylinders per day, operating 300 days per year. The reseller is sourced with propane cylinder from the main plant in Winterthur, from where cylinders are always delivered one day after order has been placed. For each
Gainesville Cigar stocks Cuban cigars that have variable lead times because of the difficulty in importing the product:lead time is normally distributed with an average of 6 weeks and a standard deviation of 2 weeks. Demand is also a variable and normally distributed with a mean of 200 cigars per
First Printing has contracts with legal firms in San Francisco to copy their court documents. Daily demand is almost constant at 12,500 pages of documents. The lead time for paper delivery is normally distributed with a mean of 4 days and a standard deviation of 1 day. A 97% service level is
Chicago’s Hard Rock Hotel distributes a mean of 1,000 bath towels per day to guests at the pool and in their rooms.This demand is normally distributed with a standard deviation of 100 towels per day, based on occupancy. The laundry firm that has the linens contract requires a 2-day lead time. The
Mr. Beautiful, an organization that sells weight training sets, has an ordering cost of $40 for the BB-1 set. (BB-1 stands for Body Beautiful Number 1.) The carrying cost for BB-1 is $5 per set per year. To meet demand, Mr. Beautiful orders large quantities of BB-1 seven times a year. The stockout
Tobacco is shipped from North Carolina to a cigarette manufacturer in Cambodia once a year. The reorder point, without safety stock, is 200 kilos. The carrying cost is $15 per kilo per year, and the cost of a stockout is $70 per kilo per year. Given the following demand probabilities during the
Authentic Thai rattan chairs (shown in the photo)are delivered to Gary Schwartz’s chain of retail stores, called The Kathmandu Shop, once a year. The reorder point, without safety stock, is 200 chairs. Carrying cost is $30 per unit per year, and the cost of a stockout is $70 per chair per year.
Based on available information, lead time demand for PC jump drives averages 50 units (normally distributed), with a standard deviation of 5 drives. Management wants a 97% service level.a) What value of Z should be applied?b) How many drives should be carried as safety stock?c) What is the
Barbara Flynn is in charge of maintaining hospital supplies at General Hospital. During the past year, the mean lead time demand for bandage BX-5 was 60 (and was normally distributed). Furthermore, the standard deviation for BX-5 was 7.Ms. Flynn would like to maintain a 90% service level.a) What
Emarpy Appliance is a company that produces all kinds of major appliances. Bud Banis, the president of Emarpy, is concerned about the production policy for the company’s bestselling refrigerator. The annual demand has been about 8,000 units each year, and this demand has been constant throughout
The oar-maker Collars produces high quality oars shipped all over the world. The oars are equipped with bronze oarlocks when sold to customers. Those oarlocks are purchased from an external supplier. In order to simplify the administrative process, and at the same time making sure not running out
Emery Pharmaceutical uses an unstable chemical compound that must be kept in an environment where both temperature and humidity can be controlled. Emery uses 800 pounds per month of the chemical, estimates the holding cost to be 50% of the purchase price (because of spoilage), and estimates order
Chris Sandvig Irrigation, Inc., has summarized the price list from four potential suppliers of an underground control valve. See the accompanying table. Annual usage is 2,400 valves;order cost is $10 per order; and annual inventory holding costs are $3.33 per unit.Which vendor should be selected
M. P. VanOyen Manufacturing has gone out on bid for a regulator component. Expected demand is 700 units per month.The item can be purchased from either Allen Manufacturing or Baker Manufacturing. Their price lists are shown in the table.Ordering cost is $50, and annual holding cost per unit is $5.
Rocky Mountain Tire Center sells 20,000 go-cart tires per year. The ordering cost for each order is $40, and the holding cost is 20% of the purchase price of the tires per year.The purchase price is $20 per tire if fewer than 500 tires are ordered, $18 per tire if 500 or more—but fewer than
The catering manager of La Vista Hotel, Lisa Ferguson, is disturbed by the amount of silverware she is losing every week. Last Friday night, when her crew tried to set up for a banquet for 500 people, they did not have enough knives. She decides she needs to order some more silverware, but wants to
Wang Distributors has an annual demand for an airport metal detector of 1,400 units. The cost of a typical detector to Wang is $400. Carrying cost is estimated to be 20% of the unit cost, and the ordering cost is $25 per order. If Ping Wang, the owner, orders in quantities of 300 or more, he can
Bell Computers purchases integrated chips at $350 per chip. The holding cost is $35 per unit per year, the ordering cost is $120 per order, and sales are steady, at 400 per month. The company’s supplier, Rich Blue Chip Manufacturing, Inc., decides to offer price concessions in order to attract
Cesar Rego Computers, a Mississippi chain of computer hardware and software retail outlets, supplies both educational and commercial customers with memory and storage devices. It currently faces the following ordering decision relating to purchases of very high-density disks:
Arthur Meiners is the production manager of WheelRite, a small producer of metal parts. Wheel-Rite supplies CalTex, a larger assembly company, with 10,000 wheel bearings each year. This order has been stable for some time. Setup cost for Wheel-Rite is $40, and holding cost is $.60 per wheel bearing
Radovilsky Manufacturing Company, in Hayward,California, makes flashing lights for toys. The company operates its production facility 300 days per year. It has orders for about 12,000 flashing lights per year and has the capability of producing 100 per day. Setting up the light production costs
Race One Motors is an Indonesian car manufacturer. At its largest manufacturing facility, in Jakarta, the company produces subcomponents at a rate of 300 per day, and it uses these subcomponents at a rate of 12,500 per year (of 250 working days). Holding costs are $2 per item per year, and ordering
M. Cotteleer Electronics supplies microcomputer circuitry to a company that incorporates microprocessors into refrigerators and other home appliances. One of the components has an annual demand of 250 units, and this is constant throughout the year. Carrying cost is estimated to be $1 per unit per
Abey Kuruvilla, of Parkside Plumbing, uses 1,200 of a certain spare part that costs $25 for each order, with an annual holding cost of $24.a) Calculate the total cost for order sizes of 25, 40, 50, 60, and 100.b) Identify the economic order quantity and consider the implications for making an error
Joe Henry’s machine shop uses 2,500 brackets during the course of a year. These brackets are purchased from a supplier 90 miles away. The following information is known about the brackets:a) Given the above information, what would be the economic order quantity (EOQ)?b) Given the EOQ, what would
Thomas Kratzer is the purchasing manager for the headquarters of a large insurance company chain with a central inventory operation. Thomas’s fastest-moving inventory item has a demand of 6,000 units per year. The cost of each unit is $100, and the inventory carrying cost is $10 per unit per
Atech Service sells professional cleaning machines and scouring agents. They deliver the scouring agents to customers on a fixed weekly schedule.The annual demand is 1500 bottles; each with a value of $10. The fixed cost for each order placed at the supplier is $100. The leadtime is 2 weeks.a)
Lead time for one of your fastest-moving products is 21 days. Demand during this period averages 100 units per day.a) What would be an appropriate reorder point?b) How does your answer change if demand during lead time doubles?c) How does your answer change if demand during lead time drops in half?
Southeastern Bell stocks a certain switch connector at its central warehouse for supplying field service offices. The yearly demand for these connectors is 15,000 units. Southeastern estimates its annual holding cost for this item to be $25 per unit.The cost to place and process an order from the
Matthew Liotine’s Dream Store sells beds and assorted supplies. His best-selling bed has an annual demand of 400 units. Ordering cost is $40; holding cost is $5 per unit per year.a) To minimize the total cost, how many units should be ordered each time an order is placed?b) If the holding cost
The small boatyard WhiteKayaks are building epoxykayaks, last year they built156.Each of those requires 12 kg of epoxy, purchased in 6 kg barrels at $170 each,freight cost is $18 per shipment plus $1 per kg. The annual carrying cost is estimated to 20% of the value.a) If the purchase policy is to
If D 5 8,000 per month, S 5 $45 per order, and H 5 $2 per unit per month,a) What is the economic order quantity?b) How does your answer change if the holding cost doubles?c) What if the holding cost drops in half? PX
William Beville’s computer training school, in Richmond, stocks workbooks with the following characteristics:Demand D = 19,500 units>year Ordering cost S = +25>order Holding cost H = +4>unit>yeara) Calculate the EOQ for the workbooks.b) What are the annual holding costs for the workbooks?c) What
The South African company AFROS sells safety equipment to from their central warehouse in Johannesburg.AFROS apply an annual counting of the inventories, approximately 55.000 articles.The supply manager is not satisfied with the record accuracy and has decided to increase the stock-counting.
Jean-Marie Bourjolly’s restaurant has the following inventory items that it orders on a weekly basis:a) Which is the most expensive item, using annual dollar volume?b) Which are C items?c) What is the annual dollar volume for all 20 items?
Boreki Enterprises has the following 10 items in inventory. Theodore Boreki asks you, a recent OM graduate, to divide these items into ABC classifications.a) Develop an ABC classification system for the 10 items.b) How can Boreki use this information?c) Boreki reviews the classification and then
L. Houts Plastics is a large manufacturer of injectionmolded plastics in North Carolina. An investigation of the company’s manufacturing facility in Charlotte yields the information presented in the table below. How would the plant classify these items according to an ABC classification system?
Why would it be advantageous to supply a regional warehouse from the central warehouse using a fixed period system?
How are inventory levels monitored in retail stores?
When demand is not constant, the reorder point is a function of what four parameters?
What is “safety stock”? What does safety stock provide safety against?
Explain what is meant by the expression “robust model.”Specifically, what would you tell a manager who exclaimed,“Uh-oh, we’re in trouble! The calculated EOQ is wrong;actual demand is 10% greater than estimated.”
Suggest how we could set the time between deliveries in a fixed period system
Explain the following: All things being equal, the production order quantity will be larger than the economic order quantity.
What is meant by “service level”?
What shall be considered if we shall increase the order quantity from the optimal to a discount point?
Even if we have substantial uncertainty in the parameters in the EOQ-model, it is still quite a useful model. Why?
What are the advantages of cycle counting?
Explain why it is not necessary to include product cost (price or price times quantity) in the EOQ model, but the quantity discount model requires this information.
Which part of the cost in the in the EOQ is a linear function of the order quantity?
Explain the major assumptions of the basic EOQ model.
Identify and explain the types of costs that are involved in an inventory system.
What is the implication of the Pareto principle?
With the advent of low-cost computing, do you see alternatives to the popular ABC classifications?
Describe the four types of inventory.
Which of the following items is most likely to be stored at the back of a warehouse, furthest away from the shipping dock?a) low number of trips and low number of storage blocksb) low number of trips and high number of storage blocksc) high number of trips and low number of storage blocksd) high
Catastrophic (“super”) events:a) affect many suppliers (sometimes all)b) can affect an entire nation even the entire worldc) would include such events as an entire set of airlines being groundedd) large-scale natural disasterse) widespread communications failuref) all the above.
Which of the following is not a characteristic of the factor-weighting approach to supplier evalution?a) it applies quantitative scores to qualitative criteriab) the weights typically sum to 100%c) multiple criteria can be considered simultaneouslyd) subjective judgment is often involvede) it
Typically, the bullwhip effect is most pronounced at which level of the supply chain?a) consumersb) suppliersc) wholesalersd) retailers
A system to ensure that an organization can resume business after a disruption is called:a) Crisis avoidance planningb) Crisis continuation planningc) Crisis disaster planningd) Business continuity planninge) Business crisis and continuity management
The items listed in the following table are stored in a warehouse.Using the following figure, indicate the best storage location for each item to minimize average distance traveled.
Amy Zeng, owner of Zeng’s Restaurant Distributions,supplies nonperishable goods to restaurants around the metro area. She stores all the goods in a warehouse. The goods are divided into five categories according to the following table.The table indicates the number of trips per month to store or
The items listed in the following table are stored in a warehouse.a) Which item should be stored at the very front (closest to the dock)?b) Which item should be stored at the very back (furthest from the dock)?
Recently, Abercrombie & Fitch (A&F) began shifting a large portion of its Asian deliveries to the U.S. from air freight to slower but cheaper ocean freight. Shipping costs have been cut dramatically, but shipment times have gone from days to weeks.In addition to having less control over inventory
A company with a plant in Basel can be served by both rail and truck at a cost of €250 and €1500 per load, respectively.The transit time for the train is 15 days while for the truck is 5 days.(a) If the daily cost of transit inventory is €100, which transportation mode is more economical
If you have a third option for the data in Problem S11.14 and it costs only $4,000 and also takes 20 days, what is your most economical plan?
Your options for shipping $100,000 of machine parts from Baltimore to Kuala Lumpur, Malaysia, are (1) use a ship that will take 30 days at a cost of $3,800 or (2) truck the parts to Los Angeles and then ship at a total cost of $4,800. The second option will take only 20 days. You are paid via a
Develop a vendor-rating form that represents your comparison of the education offered by universities in which you considered (or are considering) enrolling. Fill in the necessary data, and identify the “best” choice. Are you attending that“best” choice? If not, why not?
Using the data in Problem S11.10, assume that both Donna, Inc. and Kay Corp. are able to move all their “poor” ratings to “fair.” How would you then rank the two firms?
As purchasing agent for Eynan Enterprises in Richmond, Virginia, you ask your buyer to provide you with a ranking of “excellent,” “good,” “fair,” or “poor” for a variety of characteristics for two potential vendors. You suggest that the“Products” total be weighted 40% and the
Consider a three-firm supply chain consisting of a retailer, manufacturer, and supplier. The retailer’s demand over an 8-week period was 100 units each of the first 2 weeks, 200 units each of the second 2 weeks, 300 units each of the third 2 weeks, and 400 units each of the fourth 2 weeks. The
A manufacturer produces asingle product which is sold abroad to an industrial company through the followingchannel.
Over the past 5 weeks, demand for wine at Winston’s Winery has been 1,000, 2,300, 3,200, 1,750, and 1,200 bottles.Winston has placed weekly orders for glass bottles of 1,100, 2,500, 4,000, 1,000, and 900 units. (Recall that the sample variance of a data set can be found by using the VAR.S
Consider the supply chain illustrated below:Last year, the retailer’s weekly variance of demand was 200 units.The variance of orders was 500, 600, 750, and 1,350 units for the retailer, wholesaler, distributor, and manufacturer, respectively.(Note that the variance of orders equals the variance
Kryoneriperfume company is considering the following two alternatives for the supply of vetiver oil (an essential oil used in high-end perfumes). Alternative one is to use two suppliers located in Haiti where half of the world’s vetiver oil comes from. Each has a “unique-event” risk of 5%,
Johnson Chemicals is considering two options for its supplier portfolio. Option 1 uses two local suppliers. Each has a“unique-event” risk of 5%, and the probability of a “super-event”that would disable both at the same time is estimated to be 1.5%.Option 2 uses two suppliers located in
Refer to Problem S11.2,Wellington Company re-estimated the probability of a “super- event” to 0.2%, due to some heavy safety investment carried out in the Albuquerque plant.In addition, they replaced their second and third suppliers, for quality reasons, with another two whose annual management
Following the incident of a furnace fire in the semiconductor plant in Albuquerque, New Mexico, Wellington Company decided to change its single-sourcing strategy of major components to multi-sourcing. The top management of Wellington Company believes that the probability in any year of a
How would you go about attempting to come up with the probability of a “super-event” or the probability of a “uniqueevent?” What factors would you consider?
Besides warehouse layout decisions, what are some other applications where ranking items according to “bang/buck”might make sense?
Describe some disadvantages of using a slow shipping method.
Describe some potential pitfalls in relying solely on the results of a factor-weighting analysis for supplier selection.
Describe some potentially useful categories to include in a factor-weighting analysis for supplier selection.
Describe how the bullwhip measure can be used to analyze supply chains.
Describe causes of the bullwhip effect and their associated remedies.
Describe some ramifications of the bullwhip effect.
If the probability of a “super-event” decreases, what happens to the likelihood of needing multiple suppliers?
If the probability of a “super-event” increases, does the“unique-event” risk increase or decrease in importance?Why?
What is the difference between “unique-event” risk and“super-event” risk?
Inventory turnover 5a) Cost of goods sold 4 Weeks of supplyb) Weeks of supply 4 Annual cost of goods soldc) Annual cost of goods sold 4 52 weeksd) Average inventory investment 4 Cost of goods solde) Cost of goods sold 4 Average inventory investment

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