Operations Planning and Control

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timer Asked: Dec 5th, 2018

Question Description

Hello,

I need help doing supply chain homework. The assignment is 4 questions, I need the solution in 8 hours. Please find the attachment. Thank you so much!

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Homework 3 (4 problems) Bus Adm 475 Operations Planning and Control Problem 1. Analyze the decision tree in the following figure. What is the expected payoff for the best alternative? First, be sure to infer the missing probabilities. [0.6] [0.4] [0.1] [0.3] [0.2] Problem 2. Harley purchases from Supplier A are priced at $5 each and used at the rate of 20,000 units per month. Components purchased from supplier B are priced at $4 each and are used at the rate of 2,500 units per month. Components purchased from supplier C are priced at $5 each and used at the rate of 900 units per month. Currently, Harley purchases a separate truckload from each supplier. As part of its JIT drive, Harley has decided to aggregate purchases from the three suppliers. The trucking company charges a fixed cost of $400 for the truck with an additional charge of $100 for each stop. Thus, if Harley asks for a pickup from only one supplier, the trucking company charges $500; from two suppliers, it charges $600; and from three suppliers, it charges $700. Harley incurs a holding cost of 20 percent per year. a) If Harley aggregates purchases from all three suppliers, what is the cycle inventory of each component and what is the total annual cost excluding material cost? b) If Harley orders separately from each supplier. What is the cycle inventory and total annual cost excluding material cost? Problem 3. Weekly demand for Motorola cell phones at Best Buy store is normally distributed, with a mean of 300 and standard deviation of 200. Motorola takes two weeks to supply a Best Buy order. Best Buy is targeting a CSL of 95 percent and monitors its inventory continuously. a) How much safety inventory of cell phones should Best Buy carry? What should the ROP be? b) Assume that the supply lead time from Motorola is normally distributed with mean of 2 weeks and standard deviation of 1.5 weeks. How will the safety stock and ROP change under new assumption? 1 Problem 4. Refer to the bill of materials for product A shown in the figure below. If inventory consists of 2 units of B, 1 unit of F, and 3 units of G, how many units of G, E, and D must be purchased to produce 5 units of product A? A LT = 1 B(3) C(1) LT = 2 D(1) LT = 3 E(2) LT = 6 LT = 3 F(1) LT = 1 D(1) LT = 3 G(1) LT = 3 2
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