Operations Management
13th Edition
ISBN: 9781259667473
Author: William J Stevenson
Publisher: McGraw-Hill Education
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 13, Problem 25P
The manager of a car wash received a revised price list from the vendor who supplies soap, and a promise of a shorter lead time for deliveries. Formerly the lead time was four days, but now the vendor promises a reduction of 25 percent in that time. Annual usage of soap is 4,500 gallons. The car wash is open 360 days a year. Assume that daily usage is normal, and that it has a standard deviation of 2 gallons per day. The ordering cost is $30 and annual carrying cost is $3 a gallon. The revised price list (cost per gallon) is shown in the following table.
a. What order quantity is optimal?
b. What ROP is appropriate if the acceptable risk of a stockout is 1.5 percent?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
The manager of a car wash received a revised price list from the vendor who supplies soap, and a promise of a shorter lead time for
deliveries. Formerly the lead time was four days, but now the vendor promises a reduction of 25 percent in that time. Annual usage of
soap is 4,500 gallons. The car wash is open 360 days a year. Assume that daily usage is normal, and that it has a standard deviation of
2 gallons per day. The ordering cost is $30 and annual carrying cost is $3 a gallon. The revised price list (cost per gallon) is shown in
the following table:
Quantity
1 - 399
400 799
800 +
Unit Price
$2.00
1.70
1.62
Click here for the Excel Data File
a. What order quantity is optimal? (Round your intermediate calculations to 2 decimal places and final answer to the nearest whole
number.)
Optimal order quantity
ROP
b. What ROP is appropriate if the acceptable risk of a stockout is 1.5 percent? (Do not round intermediate calculations. Round your
final answer to 2 decimal places.)
gallons…
The manager of a car wash received a revised price list from the vendor who supplies soap, anda promise of a shorter lead time for deliveries. Formerly the lead time was four days, but now thevendor promises a reduction of 25 percent in that time. Annual usage of soap is 4,500 gallons. Thecar wash is open 360 days a year. Assume that daily usage is normal, and that it has a standarddeviation of 2 gallons per day. The ordering cost is $30 and annual carrying cost is $3 a gallon.The revised price list (cost per gallon) is shown in the following table.Quantity Unit Price1−399 $2.00400−799 1.70800 + 1.62a. What order quantity is optimal?b. What ROP is appropriate if the acceptable risk of a stockout is 1.5 percent?
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?
Chapter 13 Solutions
Operations Management
Ch. 13 - What are the primary reasons for holding...Ch. 13 - What are the requirements for effective inventory...Ch. 13 - Briefly describe each of the costs associated with...Ch. 13 - What potential benefits and risks do RFID tags...Ch. 13 - Prob. 5DRQCh. 13 - Prob. 6DRQCh. 13 - a. List the major assumptions of the EOQ model. b....Ch. 13 - Explain briefly how a higher carrying cost can...Ch. 13 - What is safety stock, and what is its purpose?Ch. 13 - Prob. 10DRQ
Ch. 13 - What is meant by the term service level? Generally...Ch. 13 - Describe briefly the A-B-C approach to inventory...Ch. 13 - The purchasing agent for a company that assembles...Ch. 13 - Explain how a decrease in setup time can lead to a...Ch. 13 - What is the single-period model, and under what...Ch. 13 - Can the optimal stocking level in the...Ch. 13 - Prob. 17DRQCh. 13 - What trade-offs are involved in each of these...Ch. 13 - Who needs to be involved in inventory decisions...Ch. 13 - How has technology aided inventory management? How...Ch. 13 - To be competitive, many fast-food chains began to...Ch. 13 - As a supermarket manager, how would you go about...Ch. 13 - Sam is at the post office to mail a package. After...Ch. 13 - Give two examples of unethical conduct involving...Ch. 13 - Prob. 1PCh. 13 - a. The following table contains figures on the...Ch. 13 - A bakery buys flours in 25-pound bags. The bakery...Ch. 13 - A large law firm uses an average of 40 boxes of...Ch. 13 - Garden Variety Flower Shop uses 750 clay pots a...Ch. 13 - A produce distributor uses 800 packing crates a...Ch. 13 - A manager receives a forecast for next year....Ch. 13 - A food processor uses approximately 27,000 glass...Ch. 13 - The Friendly Sausage Factory (FSF) can produce hot...Ch. 13 - A chemical firm produces sodium bisulfate in...Ch. 13 - A company is about to begin production of a new...Ch. 13 - Prob. 12PCh. 13 - A mail-order house uses 18,000 boxes a year....Ch. 13 - A jewelry firm buys semiprecious stones to make...Ch. 13 - A manufacturer of exercise equipment purchases the...Ch. 13 - A company will begin stocking remote control...Ch. 13 - A manager just received a new price list from a...Ch. 13 - A newspaper publisher uses roughly 800 feet of...Ch. 13 - Given this information: Expected demand during...Ch. 13 - Given this information: Lead-time demand = 600...Ch. 13 - Demand for walnut fudge ice cream at the Sweet...Ch. 13 - The injection molding department of a company uses...Ch. 13 - A company uses 85 circuit boards a day in a...Ch. 13 - One item a computer store sells is supplied by a...Ch. 13 - The manager of a car wash received a revised price...Ch. 13 - A small copy center uses five 500-sheet boxes of...Ch. 13 - Ned's Natural Foods sells unshelled peanuts by the...Ch. 13 - Regional Supermarket is open 360 days per year....Ch. 13 - A service station uses 1,200 cases of oil a year....Ch. 13 - Caring Hospital's dispensary reorders doses of a...Ch. 13 - A drugstore uses fixed-order cycles for many of...Ch. 13 - Prob. 32PCh. 13 - Prob. 33PCh. 13 - Demand for jelly doughnuts on Saturdays at Don's...Ch. 13 - A public utility intends to buy a turbine as part...Ch. 13 - Skinner's Fish Market buys fresh Boston bluefish...Ch. 13 - A small grocery store sells fresh produce, which...Ch. 13 - Demand for devil's food whipped-cream layer cake...Ch. 13 - Prob. 39PCh. 13 - Demand for rug-cleaning machines at Clyde's...Ch. 13 - A manager is going to purchase new processing...Ch. 13 - A Las Vegas supermarket bakery must decide how...Ch. 13 - Offwego Airlines has a daily flight from Chicago...Ch. 13 - UPD Manufacturing produces a range of health care...Ch. 13 - Prob. 1.2CQCh. 13 - Prob. 2.1CQCh. 13 - Grill Rite is an old-line company that started out...Ch. 13 - SARAH LUBBERS AND CHRIS RUSCHE, GRAND VALLEY STATE...Ch. 13 - SARAH LUBBERS AND CHRIS RUSCHE, GRAND VALLEY STATE...Ch. 13 - Prob. 4.3CQCh. 13 - SARAH LUBBERS AND CHRIS RUSCHE, GRAND VALLEY STATE...Ch. 13 - Prob. 4.5CQCh. 13 - Prob. 1OTQCh. 13 - Prob. 2OTQCh. 13 - Prob. 3OTQCh. 13 - Prob. 4OTQ
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
- At a recent manufacturing workshop, XYZ, Incorporated explained that demand for disposable masks increase rapidly in March 2020 when quarantine mandates first took effect. At the time, retailers could only place a single order to cover demands through the end of the summer. A certain retailer purchased disposal masks from a supplier at a cost of $20 per unit and sold them for $30 per unit. By the end of summer, demand for masks subsided considerably and all masks that weren't sold during the summer could be sold at a discounted price of $18 per unit. The retailer estimated that demand between March and August would be Normally distributed with mu = 10,000 and sigma = 1525 units With, supply chains becoming more stable since March 2020, the retailer is currently in the process of establishing a contract with a disposable mask supplier. The supplier has agreed to sell masks to the retailer for $18 per unit and will make deliveries any time the supplier places an order for a cost of $100…arrow_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_forwardFisk 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? LAarrow_forward
- Demand for a product is relatively constant at 5 units per day. Lead time for this product is normally distributed with a mean of 20 days and a standard deviation of 4 days. (a) What reorder point provides an 80 percent service level? (b) What reorder point provides a 90 percent service level? (c) If the lead time standard deviation can be reduced from 4 days to 1, what reorder point now provides 90 percent service? How much is safety stock reduced by this change?arrow_forwardPlease do not give solution in image format thankuarrow_forwardA boutique cafe in the city operates 365 days a year. The cafe has an annual demand for food products of 60,000 units with an equal daily demand across the year with the standard deviation of the daily demand of 60 units. The supplier of the products charges the cafe the base rate of the products’ price of $200 per unit and the base rate for the ordering cost including delivery of $500 per order. The supplier has agreed that it will take four days to fulfill (deliver) the orders for the cafe. The products are kept in the cafe's store, and the annual holding cost per unit is 5% of the product’s unit price. In order to build a long-term relationship, the supplier offers discounted prices for different order quantities. For any order quantity below 2,000 units, the products and the ordering cost will be priced at the base rate. For any order quantity between 2,000 and 4,999 units, the cafe will receive a 5% discount on the base rate of the products’ price and a 10% discount on the base…arrow_forward
- Huehn-Brown Products in St. Petersburg offers thefollowing discount schedule for its 4-by-8-foot sheets of quality plywood. Home Sweet Home Company orders plywood from HuehnBrown.Home Sweet Home has an ordering cost of$45. Carryingcost is 20%, and annual demand is 100 sheets. What do you recommend?arrow_forwardis the percentage of the billed cost given by a vendor when a stipulated quantity is purchased. 1. Quantity Discount 2. Cash Discount 3. Vendor discount 4. List price discountarrow_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_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Practical Management ScienceOperations ManagementISBN:9781337406659Author:WINSTON, Wayne L.Publisher:Cengage,
Operations ManagementOperations ManagementISBN:9781259667473Author:William J StevensonPublisher:McGraw-Hill Education
Operations and Supply Chain Management (Mcgraw-hi...Operations ManagementISBN:9781259666100Author:F. Robert Jacobs, Richard B ChasePublisher:McGraw-Hill Education
Purchasing and Supply Chain ManagementOperations ManagementISBN:9781285869681Author:Robert M. Monczka, Robert B. Handfield, Larry C. Giunipero, James L. PattersonPublisher:Cengage Learning
Production and Operations Analysis, Seventh Editi...Operations ManagementISBN:9781478623069Author:Steven Nahmias, Tava Lennon OlsenPublisher:Waveland Press, Inc.
Practical Management Science
Operations Management
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:Cengage,
Operations Management
Operations Management
ISBN:9781259667473
Author:William J Stevenson
Publisher:McGraw-Hill Education
Operations and Supply Chain Management (Mcgraw-hi...
Operations Management
ISBN:9781259666100
Author:F. Robert Jacobs, Richard B Chase
Publisher:McGraw-Hill Education
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
Production and Operations Analysis, Seventh Editi...
Operations Management
ISBN:9781478623069
Author:Steven Nahmias, Tava Lennon Olsen
Publisher:Waveland Press, Inc.
Inventory Management | Concepts, Examples and Solved Problems; Author: Dr. Bharatendra Rai;https://www.youtube.com/watch?v=2n9NLZTIlz8;License: Standard YouTube License, CC-BY