A drugstore uses fixed-order cycles for many of the items it stocks. The manager wants a servicelevel of .98. The order interval is 14 days, and lead time is 2 days. Average demand for one itemis 40 units per day, and the standard deviation of demand is 3 units per day. Given the on-handinventory at the reorder time for each order cycle shown in the following table, determine theorder quantities for cycles 1, 2, and 3.Cycle On Hand1 422 83 103

A drugstore uses fixed-order cycles for many of the items it stocks. The manager wants a servicelevel of .98. The order interval is 14 days, and lead time is 2 days. Average demand for one itemis 40 units per day, and the standard deviation of demand is 3 units per day. Given the on-handinventory at the reorder time for each order cycle shown in the following table, determine theorder quantities for cycles 1, 2, and 3.Cycle On Hand1 422 83 103

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Description: A drugstore uses fixed-order cycles for many of the items it stocks. The manager wants a servicelevel of .98. The order interval is 14 days, and lead time is 2 days. Average demand for one itemis 40 units per day, and the standard deviation of demand

Purchasing and Supply Chain Management

6th Edition

ISBN:9781285869681

Author:Robert M. Monczka, Robert B. Handfield, Larry C. Giunipero, James L. Patterson

Publisher:Robert M. Monczka, Robert B. Handfield, Larry C. Giunipero, James L. Patterson

Chapter16: Lean Supply Chain Management

Section: Chapter Questions

Problem 10DQ: The chapter presented various approaches for the control of inventory investment. Discuss three...

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A drugstore uses fixed-order cycles for many of the items it stocks. The manager wants a service level of .99. The order interval is 12 days, and lead time is 4 days. Average demand for one item is 63 units per day, and the standard deviation of demand is 6 units per day. Given the on-hand inventory at the reorder time for each order cycle shown in the following table. Use Table. Cycle On Hand 1 38 2 10 3 93 Determine the order quantities for cycles 1, 2, and 3: (Round your answers to the nearest whole number) Cycle Units 1 1019 Numeric ResponseEdit Unavailable. 1019 incorrect. 2 1047 Numeric ResponseEdit Unavailable. 1047 incorrect. 3 964 Numeric ResponseEdit Unavailable. 964 incorrect.
Petromax Enterprises uses a continuous review policy to manage the inventory for one of its SKUs. The following information is available on the item. The firm operates 50 weeks in a year. Demand = 90,000 units/year Ordering Cost = $60/Order Holding Cost = $3/Unit/Order Lead Time = 10 weeks Standard Deviation of Weekly Demand = 200 units Suppose due to some recent changes to the target service level, they have determined the reorder point to be 20,000. If the inventory position of this SKU is currently 19,600, how many units should they order? (Round your answer to the nearest whole number, if it has decimals. Input 0 if they should not order now.)
Hayes electronics assumed with certainty that the ordering cost is $450 per order and the inventory carrying cost is $170 per unit per year. However, the inventory model parameters are frequently only estimates that are subject to some degree of uncertainty. Consider four cases of variation in the model parameters as follows: (a) both ordering cost and carrying cost are 10% less that originally estimated, (b) both ordering cost and carrying cost are 10% higher than originally estimated, (c) ordering cost is 10% higher and carrying cost is 10% lower than originally estimated, and (d) ordering cost is 10% lower and carrying cost is 10% higher than originally estimated. Determine the optimal order quantity and total inventory cost for each of the four cases. Prepare a table with values from all four cases and compare the sensitivity of the model solution to changes in parameter values.
A company manufactures two products A and B. Each A requires two C’s and one D. Each D requires two F’s and one E, while each E requires one F. Each product B requires one D and two E’s. The table below shows data from the inventory records. ITEM ITEM ITEM ITEM DATA CATEGORY C D E F Lot - sizing rule Fixed Order Quantity = 220 Lot for Lot Fixed Order Quantity = 300 Period Order Quantity P = 2 Lead time 3 weeks 2 weeks 3 weeks 2 weeks Scheduled receipts 280 (week 1) None 300 (week 3) None Beginning inventory 25 0 150 600 The MPS for product A calls for 85 units to be started in week 3 and 100 units to be started in week 6. The MPS for product B calls for 180 units to be started in week 5.Develop the material requirements plan (showing Gross requirements, Scheduled receipts, On hand inventory, Net requirements, and Planned-order release) for the next six weeks for items C, D, E and F.
Hayes Electronics assumed with certainty that the ordering cost is $450 per order and the inventory carrying cost is $170 per unit per year. However, the inventory model parameters are frequently only estimates that are subject to some degree of uncertainty. Consider four cases of variation in the model parameters: (a) Both ordering cost and carrying cost are 10% less than originally estimated, (b) both ordering cost and carrying cost are 10% higher than originally estimated, (c) ordering cost is 10% higher and carrying cost is 10% lower than originally estimated, and (d) ordering cost is 10% lower and carrying cost is 10% higher than originally estimated. Determine the optimal order quantity and total inventory cost for each of the four cases. Prepare a table with values from all four cases and compare the sensitivity of the model solution to changes in parameter values.
The TransCanada Lumber Company and Mill processes10,000 logs annually, operating 250 days per year. Immediately upon receiving an order, the logging company’ssupplier begins delivery to the lumber mill at the rate of 60logs per day. The lumber mill has determined that the ordering cost is $1600 per order, and the cost of carrying logsin inventory before they are processed is $15 per log on anannual basis. Determine the following:a. The optimal order sizeb. The total inventory cost associated with the optimalorder quantityc. The number of operating days between ordersd. The number of operating days required to receive anorde
The TransCanada Lumber Company and Mill processes 10,000 logs annually, operating 250 days per year. Imme-diately upon receiving an order, the logging company’s supplier begins delivery to the lumber mill at the rate of 60 logs per day. The lumber mill has determined that the or-dering cost is $1600 per order, and the cost of carrying logs in inventory before they are processed is $15 per log on anannual basis. Determine the following:a. The optimal order sizeb. The total inventory cost associated with the optimalorder quantityc. The number of operating days between ordersd. The number of operating days required to receive anorder
A manager receives a forecast for next year. Demand is projected to be 600 units for the first half of the year and 920 units for the second half. The monthly holding cost is $2 per unit, and it costs an estimated $55 to process an order. a.Assuming that monthly demand will be level during each of the six-month periods covered by the forecast (e.g., 100 per month for each of the first six months), determine an order size that will minimize the sum of ordering and carrying costs for each of the six-month periods. (Round your answers to the nearest whole number.) Period Order Size 1 – 6 months?_____units 7 – 12 months?_____units b.If the vendor is willing to offer a discount of $10 per order for ordering in multiples of 50 units (e.g., 50, 100, 150), would you advise the manager to take advantage of the offer in either period? If so, what order size would you recommend? (Round intermediate calculations to 2 decimal places.) Period Order Size 1 – 6 months?____ units 7 – 12 months?____…
The two most important inventory-based questionsanswered by the typical inventory model are:a) when to place an order and the cost of the order.b) when to place an order and how much of an itemto order.c) how much of an item to order and the cost of the order.d) how much of an item to order and with whom theorder should be placed.
It takes approximately 2 weeks (14 days) for an order ofsteel bolts to arrive once the order has been placed. The demandfor bolts is fa irly constant; on the average, the manager, MichelleWu, has observed that the hardware store sells 500 of these boltseach day. Because the demand is fairly constant, Michelle believesthat she can avoid stockouts completely if she orders the bolts atthe correct time. What is the reorder poin t?
In the past, Taylor Industries has used a fixed−time period inventory system that involved taking a complete inventory count of all items each month. However, increasing labor costs are forcing Taylor Industries to examine alternative ways to reduce the amount of labor involved in inventory stockrooms, yet without increasing other costs, such as shortage costs. Here is a random sample of 20 of Taylor's items. ITEMNUMBER ANNUALUSAGE ITEMNUMBER ANNUALUSAGE 1 $1,900 11 $13,800 2 12,700 12 1,000 3 2,700 13 43,600 4 51,800 14 10,600 5 10,300 15 1,600 6 1,200 16 10,900 7 2,500 17 4,500 8 11,700 18 63,200 9 5,600 19 4,000 10 15,800 20 3,400 a. Classify each item in inventory using an ABC plan. item # Class (A, B, or C) 1 2 3 4 5 6 7 8 9 10
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…