Consider a two-stage plant-retailer supply chain. Lead time for orders is two weeks. Safety stock is equal to one week's demand, and future demand is estimated by the average of the past two weeks. a) Develop production planning model (equations) for the retailer that states the order-up-to rule, and order quantities as a function of time. b) Using a table format (Columns are Week, Starting retail inventory, On order, Order-up-to target, Order quantity, and Demand) track performance of the retailer for eight weeks if demand suddenly shifts from 100 units per week to 110 units per week starting in period 3 and stays at 110 to the end.

Consider a two-stage plant-retailer supply chain. Lead time for orders is two weeks. Safety stock is equal to one week's demand, and future demand is estimated by the average of the past two weeks. a) Develop production planning model (equations) for the retailer that states the order-up-to rule, and order quantities as a function of time. b) Using a table format (Columns are Week, Starting retail inventory, On order, Order-up-to target, Order quantity, and Demand) track performance of the retailer for eight weeks if demand suddenly shifts from 100 units per week to 110 units per week starting in period 3 and stays at 110 to the end.

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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Consider a two-stage plant-retailer supply chain. Lead time for orders is two weeks. Safety stock is equal to one week's demand, and future demand is estimated by the average of the past two weeks. 1. Develop production planning model (equations) for the retailer that states the order-up- to rule, and order quantities as a function of time. 2. Using a table format (Columns are Week, Starting retail inventory, On order, Order-up-to target, Order quantity, and Demand) track performance of the retailer for eight weeks if demand suddenly shifts from 100 units per week to 110 units per week starting in period 3 and stays at 110 to the end.
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If the company in #8 uses exponential smoothing (smoothing factor = .6) and the forecast for the year is the figure they use for EOQ calculations, calculate the EOQ using the following information: The cost of ordering and carrying cost % are the same as #7 Cost of ordering: $25 Carrying costs: 45% Starting with 2018, Forecast the 2020 demand using exponential smoothing and then use that forecast as the annual demand. year sales 2017 1,000,000 2018 1,200,000 2019 2,000,000 2020
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Your company has previously used a fixed order size where ordering takes place once a quarter, but since the product's sustainability only allows warehousing for a limited time, demand varies somewhat and the product's character also means that the stock cost is rather expensive, SEK 54 per product and year. So, the company wants to investigate whether a more dynamic order size is preferable. Each order costs the company approximately SEK 1,200. The forecast for the next 4 months is given below: Month 1 2 3 4 Forecast 180 320 490 180 Decide in which periods ordering should take place (you can choose the calculation method).
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…