Concept explainers
William Seville’s computer training school, in Richmond, stocks workbooks with the following characteristics:
a) Calculate the EOQ for the workbooks.
b) What are the annual holding costs for the workbooks?
c) What are the annual ordering costs?
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Principles of Operations Management: Sustainability and Supply Chain Management (10th Edition)
- Walrus Company has the following information available concerning one of its inventory items: Cost of placing an order $30.00 Unit carrying cost per year $3.00 Annual unit demand 6,625 Safety stock 125 Average daily demand 25 Normal lead time in days 10 If there is a delay in shipping the item, approximately how many days can be covered by the safety stock? a.5 days b.110 days c.26 days d.31 daysarrow_forwardEOQ, reorder point, and safety stock Alexis Company uses 916 units of a product per year on a continuous basis. The product has a fixed cost of $60 per order, and its carrying cost is $3 per unit per year. It takes 5 days to receive a shipment after an order is placed, and the firm wishes to hold 10 days' usage in inventory as a safety stock. a. Calculate the EOQ. b. Determine the average level of inventory. (Note: Use a 365-day year to calculate daily usage.) c. Determine the reorder point. d. Indicate which of the following variables change if the firm does not hold the safety stock: (1) order cost, (2) carrying cost, (3) total inventory cost, (4) reorder point, (5) economic order quantity. a. Alexis' EOQ is units. (Round to the nearest whole number.)arrow_forwardReorder Point Ordering: Average daily demand ( d) is 5 units with a std. dev. (od) of 1 unit. Average lead time ( LT) is 24 days with a std. dev. (OLT) of 1 day. The inventory manager wants to operate within 3 std. deviations (z = 3). Find the reorder point (ROP) and safety stock (S). ROP=141, SS=120 ROP=141, SS=21 ROP=120, SS=21 ROP=21, SS=141arrow_forward
- Annual demand= 360 units Holding cost per year = 1 $ per unit Ordering cost = $ 100 per order Compute EOQ , total cost(holding and ordering cost),no of order per year and expected time (days) between orders(Assuming a 300-day work ) and what would the actual total holding and ordering costs be if the annual demand was actually higher than estimated i.e 500 units instead of 360 units, but the EOQ established above is used. If demand for an item is 3 units per day, and delivery lead time is 15 days, what would be the re-order point?arrow_forwardThe 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?arrow_forwardWilliam Beville’s computer training school, inRichmond, stocks workbooks with the following characteristics: Demand D = 19,500 units>yearOrdering cost S = +25>orderHolding cost H = +4>unit>yeara) Calculate the EOQ for the workbooks.b) What are the annual holding costs for the workbooks?c) What are the annual ordering costs?arrow_forward
- William Beville's computer training school, in Richmond, stocks workbooks with the following characteristics: Demand D Ordering cost S Holding cost H 19,100 units/year $26/order $4/unit/yeararrow_forwardEzrah is attempting to perform an inventory analysis on one of her most popular beauty products, the Heavenly perfume Annual demand for this product is 10,000 units with carrying costs of P50 per unit per year . ordering costs for her company typically run P100 per order Lead time averages 10 days (Assume 250 working days) What is the economic order quantity?arrow_forwardXemex has collected the following inventory data for the six items that it stocks: ITEM CODE UNIT COST ($) ANNUAL DEMAND (UNITS) ORDERING COST ($) CARRYING COST AS A PERCENTAGE OF UNIT COST 1 10.60 600 40 20 2 11.00 450 30 25 3 2.25 500 50 15 4 150.00 560 40 15 5 4.00 540 35 16 6 4.10 490 40 17 Lynn Robinson, Xemex’s inventory manager, does not feel that all of the items can be controlled. What ordered quantities do you recommend for which inventory product(s)?arrow_forward
- William Bevi lle's computer training school, inRichmond, stocks workbooks with the following characteristics:Demand D = 19,500 units/ yearOrdering costS = $25/ orderHolding cost H = $4/ unitjyeara) Calculate the EOQ for the workbooks.b) What are the annual holding costs for the workbooks?c) What are the annual ordering costs?arrow_forwardm12h6p4arrow_forwardIt is your responsibility, as the new head of the automotive section of Nichols Department Store, to ensure that reorder quantities for the various items have been correctly established. You decide to test one item and choose Michelin tires, XW size 185 × 14 BSW. A perpetual inventory system has been used, so you examine this as well as other records and come up with the following data: Cost per tire $35 each Holding cost 20 percent of tire cost per year Demand 1,000 per year Ordering cost $20 per order Standard deviation of daily demand 3 tires Delivery lead time 4 days Because customers generally do not wait for tires but go elsewhere, you decide on a service probability of 98 percent. Assume the demand occurs 365 days per year. Determine the order quantity. Note: Round your answer to the nearest whole number. Determine the reorder point. Note: Use Excel's NORM.S.INV() function to find the z value. Round z value to 2 decimal places and final answer to the…arrow_forward
- Purchasing and Supply Chain ManagementOperations ManagementISBN:9781285869681Author:Robert M. Monczka, Robert B. Handfield, Larry C. Giunipero, James L. PattersonPublisher:Cengage Learning