Operations Management: Processes And Supply Chains (12th Edition) (what's New In Operations Management)
12th Edition
ISBN: 9780134742205
Author: Lee J. Krajewski, Manoj K. Malhotra, Larry P. Ritzman
Publisher: PEARSON
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Question
Chapter 9, Problem 22P
A
Summary Introduction
Interpretation: The order quantity that should be used in a continuous review inventory system is to be calculated.
Concept Introduction: Economic order quantity (EOQ) is the order of quantity that decreases the total holding cost and ordering costs for the annum.
B
Summary Introduction
Interpretation: The reorder point that should be used is to be calculated.
Concept Introduction: Reorder point assures that there should be a balance in stock. It avoids unnecessary carrying cost of the stock.
C
Summary Introduction
Interpretation: The total number of cost for this inventory system is to be calculated.
Concept Introduction: Annual holding cost is the stock holding cost per annum.
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Ergonomics Inc. sells ergonomically designed office chairs. The company has the following information:
Average demand = 36 units per day
Average lead time = 50 days
Item unit cost = $70 for orders of less than 400 units
Item unit cost = $68 for orders of 400 units or more
Ordering cost = $45
Inventory carrying cost = 25%
The business year is 250 days
Assume there is no uncertainty at all about the demand or the lead time.
Calculate EOQ if unit cost is $70 and $68. (Note: These EOQs do not need to be feasible in theirprice range.) (Round up your answers to the next whole number.)
EOQ
Unit cost at $70
units
Unit cost at $68
units
Calculate annual ordering costs for each alternative? (For the first value, use your rounded EOQ from Part a. For the second value, use the lowest feasible order quantity needed to qualify for that price level. Round your answers to 2 decimal places.)
Annual Ordering Cost
Unit cost at $70
Unit…
The materials manager for a billiard ball maker must periodically place orders for resin, one of the raw materials used in producing billiard balls. She knows that manufacturing uses resin at a rate of 50 kilograms each day, and that it costs $.04 per day to carry a kilogram of resin in inventory. She also knows that the order costs for resin are $100 per order, and that the lead time for delivery is four days.
If the order size was 1,000 kilograms of resin, what would be the average inventory level?
Osprey Sports stocks everything that a musky fisherman could want in the Great North Woods. A particular musky lure has been very popular with local fishermen as well as those who buy lures on the Internet from Osprey Sports. The cost to place orders with the supplier is
$30/order;
the demand averages
3
lures per day, with a standard deviation of
1
lure; and the inventory holding cost is
$1.00/lure/year.
The lead time form the supplier is
9
days, with a standard deviation of
3
days. It is important to maintain a
97
percent cycle-service level to properly balance service with inventory holding costs. Osprey Sports is open 350 days a year to allow the owners the opportunity to fish for muskies during the prime season. The owners want to use a continuous review inventory system for this item. Refer to the
standard normal table
for z-values.
1. What order quantity should be used?
2. What reorder point should be used ?
3. What is the total annual cost of this inventory system?
Chapter 9 Solutions
Operations Management: Processes And Supply Chains (12th Edition) (what's New In Operations Management)
Ch. 9 - What is the relationship between inventory and the...Ch. 9 - Suppose that a large discount retailer with a lot...Ch. 9 - Will organizations ever get to the point where...Ch. 9 - A part is produced in lots of 1,000 units. It is...Ch. 9 - Prince Electronics, a manufacturer of consumer...Ch. 9 - Terminator, Inc. manufactures a motorcycle part in...Ch. 9 - Ruby-Star Incorporated is considering two...Ch. 9 - Haley Photocopying purchases paper from an...Ch. 9 - Prob. 6PCh. 9 - Southern Markets, Inc. is considering the use of...
Ch. 9 - New Wave Shelving’s inventory manager would like...Ch. 9 - Yellow Press, Inc. buys paper in 1,500-pound rolls...Ch. 9 - Babble, Inc. buys 400 blank cassette tapes per...Ch. 9 - At Dot Com, a large retailer of popular books,...Ch. 9 - Leaky Pipe, a local retailer of plumbing supplies,...Ch. 9 - Sam’s Cat Hotel operates 52 weeks per year, 6...Ch. 9 - Consider again the kitty litter ordering policy...Ch. 9 - In a Q system, the demand rate for strawberry ice...Ch. 9 - Petromax Enterprises uses a continuous review...Ch. 9 - In a continuous review inventory system, the lead...Ch. 9 - In a two-bin inventory system, the demand for...Ch. 9 - You are in charge of inventory control of a highly...Ch. 9 - Your firm uses a continuous review system and...Ch. 9 - A company begins a review of ordering policies for...Ch. 9 - Prob. 22PCh. 9 - The Farmer’s Wife is a country store...Ch. 9 - Prob. 24PCh. 9 - Prob. 25PCh. 9 - Prob. 26PCh. 9 - In a P system, the lead time for a box of...Ch. 9 - Suppose that Sam’s Cat Hotel in Problem 13 uses...Ch. 9 - Your firm uses a periodic review system for all...Ch. 9 - Using the same information as in Problem 21,...Ch. 9 - Wood County Hospital consumes 1,000 boxes of...Ch. 9 - A golf specialty wholesaler operates 50 weeks per...Ch. 9 - What is the EOQ and what is the lowest total cost?Ch. 9 - What is the annual cost of holding inventory at...Ch. 9 - Prob. 3AMECh. 9 - Prob. 4AMECh. 9 - Prob. 5AMECh. 9 - Prob. 6AMECh. 9 - Comment on the sensitivity of the EOQ model to...Ch. 9 - Consider the pressures for small versus large...Ch. 9 - Prob. 2VCCh. 9 - The Marker Maker© product recently experienced an...Ch. 9 - Put yourself in Sue McCaskey’s position and...Ch. 9 - By how much do your recommendations for these two...
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