OPERATIONS MANAGEMENT IN THE SUPPLY CHAIN: DECISIONS & CASES (Mcgraw-hill Series Operations and Decision Sciences)
7th Edition
ISBN: 9780077835439
Author: Roger G Schroeder, M. Johnny Rungtusanatham, Susan Meyer Goldstein
Publisher: McGraw-Hill Education
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 14, Problem 8P
An electronics retailer carries a particular cellular telephone with the following characteristics:
Average monthly sales = 120 units
Ordering cost = S25 per order
Carrying cost = 35 percent per year
Item cost = S300 per unit
Lead time = 4 days
Standard deviation of daily demand = .2 unit
Working days per year = 250
- a. Determine the EOQ.
- b. Calculate the reorder point for a 92 percent service level, assuming
normally distributed demand. - c. Design a Q system for this item.
- d. What happens to the reorder point when the lead time changes? What happens to the reorder point when the standard deviation of demand changes?
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
An electronics retailer carries a particular cellular telephone with the following characteristics:Average monthly sales = 120 unitsOrdering cost = $25 per orderCarrying cost = 35 percent per yearItem cost = $300 per unitLead time = 4 daysStandard deviation of daily demand = .2 unitWorking days per year = 250a. Determine the EOQ.b. Calculate the reorder point for a 92 percent service level, assuming normally distributed demand.c. Design a Q system for this item.d. What happens to the reorder point when the lead time changes? What happens to the reorder point when the standard deviation of demand changes?
Daily demand for product sample kits is normally distributed with a mean of 35 units and a standard deviation of 4. Supply is virtually certain with a lead time of 9 days. The cost of placing an order is $20, and annual carrying costs for one kit is 25 percent. The price of one kit is $12.50. Assume a year has 365 days.If a 99% service level is desired, what is average inventory on hand?
If demand had no variation, what would the reorder point be?
Fisk Corporation is trying to improve its inventory control system and has installed an online system at its retail stores. Fisk anticipates
sales of 58,800 units per year, an ordering cost of $4 per order, and carrying costs of $1.50 per unit. In the second year, Fisk
Corporation finds that it can reduce ordering costs to $1 per order, but carrying costs will stay the same at $1.50 per unit.
a-1. What is the economic ordering quantity for the second year?
Economic ordering quantity (EOQ)
a-2. How many orders will be placed during the second year?
Number of orders
a-3. What will the average inventory be for the second year?
Average inventory
Total costs
units
units
a-4. What is the total cost of ordering and carrying inventory for second year?
LA
Chapter 14 Solutions
OPERATIONS MANAGEMENT IN THE SUPPLY CHAIN: DECISIONS & CASES (Mcgraw-hill Series Operations and Decision Sciences)
Ch. 14.S - eXcel Suppose that for problem 1 in the chapter,...Ch. 14.S - Prob. 2PCh. 14.S - For problem 2 in the chapter, suppose the Grinell...Ch. 14.S - A producer of electronic parts wants to take...Ch. 14 - Identify the different types of inventories (raw...Ch. 14 - Why are stockout costs difficult to determine?...Ch. 14 - What is the difference between a requirements...Ch. 14 - Compare and contrast the management of finished...Ch. 14 - For a given service level, why does a P system...Ch. 14 - Under what circumstances might CPFR be useful, and...
Ch. 14 - Prob. 7DQCh. 14 - What is the appropriate role of inventory turnover...Ch. 14 - Suppose you are managing a chain of retail...Ch. 14 - The Always Fresh Grocery Store carries a...Ch. 14 - The Grinell Machine Shop makes a line of metal...Ch. 14 - The local Toyota dealer has to decide how many...Ch. 14 - Prob. 4PCh. 14 - The famous Widget Company sells widgets at the...Ch. 14 - Prob. 6PCh. 14 - Prob. 7PCh. 14 - An electronics retailer carries a particular...Ch. 14 - An electronics retailer carries a particular...Ch. 14 - The local Toyota dealer has to decide how many...Ch. 14 - The Suregrip Tire Company carries a certain type...Ch. 14 - The Suregrip Tire Company carries a certain type...Ch. 14 - eXcel 13. The Cover-up Drapery Company carries...Ch. 14 - Suppose you are the supplier of the Cover-up...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, operations-management and related others by exploring similar questions and additional content below.Similar questions
- Charlie’s Pizza orders all of its pepperoni, olives, anchovies, and mozzarella cheese to be shipped directly from Italy. An American distributor stops every four weeks to take orders. Because the orders are shipped directly from Italy, they take three weeks to arrive. Charlie’s Pizza uses an average of 150 pounds of pepperoni each week, with a standard deviation of 30 pounds. Charlie’s prides itself on offering only the best quality ingredientsand a high level of service, so it wants to ensure a 98 percent probability of not stocking out on pepperoni. Assume that the sales representative just walked in the door and there are currently 500 pounds of pepperoni in the walk-in cooler. How many pounds of pepperoni would you order? (Answer in Appendix D)arrow_forwardA pharmacist is trying to determine the inventory order and stock levels for a particular drug. The following information is available about the drug. Demand (D) 85 tablets/week Working weeks per year 52 weeks Unit holding cost per year (H) $6 Order cost (S) $44/order Standard deviation of weekly demand (sd) 15 tablets Lead time (L) 2 weeks Desired cycle service level 95% If the pharmacist uses the continuous review (Q) system to control the inventory of the drug, what would be the order quantity and reorder point? If the pharmacist uses the periodic review (P) system to control the inventory of the drug, what would be the review interval and target inventory level? (Hint: Use the EOQ model to derive the review interval P)arrow_forwardWeekly Average Demand 110 Standard deviation of (weekly) demand 30 Setup cost ($) 1400 Lead time (in weeks) 2 Procurement cost ($) 200 Holding cost /unit/week ($) 3 You are given the demand and inventory related information about a grocery store’s product in the table. The store is open for 46 weeks in a year. What is the reorder point if it wants to achieve a service level of 97%? (Do not round your intermediate calculations. Round your final answers to the nearest whole number.arrow_forward
- Especially for wholesalers and retailers involved in the distribution channels for consumer packaged goods, inventory management is a careful balancing act between: supply and demand. controlled supply and variable demand. lower inventory levels and acceptable customer service levels. variable inventory levels and consistent customer service levels.arrow_forwardABC classification divides on-hand inventory into three classes, generally based upon a. item quantity. b. unit price. c. the number of units on hand. d. annual demand. e. annual dollar value.arrow_forwardAs the Manager of Branson’s Department Store, you are responsible for ensuring that reorder quantities for the various items have been correctly established. You decide to test one item and choose product Z. A continuous review inventory policy has been used, so you examine this as well as other records and come up with the following data: Cost per unit $35 Holding cost 20 percent of unit cost Average daily demand 10 units Ordering cost $30 per order Standard deviation of daily demand 3 units Delivery lead time 4 days Because customers generally do not wait but go elsewhere, you decide on a service probability of 90 percent. Assume that Branson’s Department Store operates 320 days per year. [What is the annual demand (D)? Determine the optimal order quantity, Q*. Determine the reorder point (R) if demand is constant. Determine the reorder point (R) if demand is varies.arrow_forward
- You are in charge of inventory control of a highly successful product retailed by your firm. Weekly demand for this item varies, with an average of 200 units and a standard deviation of 16 units. It is purchased from a wholesaler at a cost of $12.50 per unit. You are using a continuous review system to control this inventory. The supply lead time is 4 weeks. Placingan order costs $50, and the inventory carrying rate per year is 20 percent of the item’s cost. Your firm operates 5 days per week, 50 weeks per year.a. What is the optimal ordering quantity for this item?b. How many units of the item should be maintained as safety stock for 99 percent protection against stockouts during an order cycle?c. If supply lead time can be reduced to 2 weeks, what is the percent reduction in the number of units maintained as safety stock for the same 99 percent stockout protection?d. If through appropriate sales promotions, the demand variability is reduced so that the standard deviation of weekly…arrow_forwardFisk Corporation is trying to improve its inventory control system and has installed an online computer at its retail stores. Fisk anticipates sales of 97,200 units per year, an ordering cost of $4 per order, and carrying costs of $1.50 per unit. What is the economic ordering quantity? How many orders will be placed during the year? What will the average inventory be? What is the total cost of ordering and carrying inventory?arrow_forwardA subcontracting firm Gamma Pharmaceuticals Ltd. located in Western India dealing with generic medicines operates 50 weeks per year. The following information is available regarding the major ingredient used for the medicine:Weekly Demand= 60 unitsStandard deviation of weekly demand = 9 unitsOrdering costs (Co) = Rs. 64/ orderHolding costs (Ch) = Rs.40/unit/yearCycle-service level = 90% (z-value = 1.28)Lead time = 2 weeksNumber of weeks per year = 50 weeksd) Using the fixed order quantity system to control inventory, calculate the EOQe) Compute the reorder point and state the order decision rulef) Compute the total variable cost of inventory.arrow_forward
- A local distributor for a national tire company expects to sell approximately 9,240 tires of a certain size and tread design next year. Annual carrying cost is $18 per tire and ordering cost is $84. The distributor operates 286 days a year. a. What is the EOQ? (Round your answer to a whole number.) 1:00 b. How many times per year does the store reorder? (Round your answer to two decimal points.) Number of Ondors per Year c. What is the length of an order cycle? (Round your answer to two decimal points.) Length of Order Cycle d. What will the total annual carrying and ordering cost be if the EOQ quantity is ordered? (Round your answer to a whole number.) Total Annual Inventory Costarrow_forwardCharlie’s Pizza orders all of its pepperoni, olives, anchovies, and mozzarella cheese to be shipped directly from Italy. An American distributor stops by every four weeks to take orders. Because the orders are shipped directly from Italy, they take three weeks to arrive. Charlie’s Pizza uses an average of 150 pounds of pepperoni each week, with a standard deviation of 30 pounds. Charlie’s prides itself on offering only the best-quality ingre- dients and a high level of service, so it wants to ensure a 98 percent probability of not stocking out on pepperoni. Assume that the sales representative just walked in the door and there are currently 500 pounds of pepperoni in the walk-in cooler. How many pounds of pepperoni would you order?arrow_forwardThompson Paint Company uses 60,000 gallons of pigment per year. The cost of ordering pigment is $200 per order, and the cost of carrying the pigment in inventory is $1 per gallon per year. The firm uses pigment at a constant rate every day throughout the year. a. Calculate the EOQ. b. If it takes 20 days to receive an order once it has been placed, determine the reorder point in terms of gallons of pigment. (Note: Use a 365-day year.)arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Purchasing and Supply Chain ManagementOperations ManagementISBN:9781285869681Author:Robert M. Monczka, Robert B. Handfield, Larry C. Giunipero, James L. PattersonPublisher:Cengage Learning
Purchasing and Supply Chain Management
Operations Management
ISBN:9781285869681
Author:Robert M. Monczka, Robert B. Handfield, Larry C. Giunipero, James L. Patterson
Publisher:Cengage Learning
Inventory Management | Concepts, Examples and Solved Problems; Author: Dr. Bharatendra Rai;https://www.youtube.com/watch?v=2n9NLZTIlz8;License: Standard YouTube License, CC-BY