Archives: Solution Manual
978-0078024108 Chapter 3 Part 3
Chapter 03 – Forecasting Copyright © 2015 McGraw-Hill Education. All rights reserved. No reproduction or distribution without the prior written consent of McGraw-Hill 17. Given: Day 1 2 3 4 5 6 7 8 9 # Sold 36 38 42 […]
978-0078024108 Chapter 3 Part 2
Chapter 03 – Forecasting Copyright © 2015 McGraw-Hill Education. All rights reserved. No reproduction or distribution without the prior written consent of McGraw-Hill 8. a. There appears to be a long-term upward increasing trend in the data. If we use […]
978-0078024108 Chapter 3 Part 1
Chapter 03 – Forecasting 3-1 CHAPTER 03 FORECASTING Forecasting is placed early in the text mainly because it is a point of departure. Some instructors like to emphasize the operations part of operations management and de-emphasize the design part. Other […]
978-0078024108 Chapter 2 Part 2
Chapter 02 – Competitiveness, Strategy, and Productivity 2-8 Education. 6. Current period productivity = hourunits hours units / 00.4 40 160 (rounded to two decimals) Previous period productivity = hourunits hours units / 83.3 63 381 (rounded to two […]
978-0078024108 Chapter 2 Part 1
Chapter 02 – Competitiveness, Strategy, and Productivity CHAPTER 02 COMPETITIVENESS, STRATEGY, AND PRODUCTIVITY Teaching Notes The topics covered in this chapter can be used to help get your course in OM off to an interesting start. Most of your students […]
978-0078024108 Chapter 19 Part 10
Chapter 19 – Linear Programming 19–89 e. Determine values for new x2 row: 0 1 –0.3 0.1 0.3 –0.1 1.8 f. Determine new values for row Z: Row Cost x1 x2 s1 s2 a1 a2 Quantity x2 10 10(0) 10(1) […]
978-0078024108 Chapter 19 Part 9
Chapter 19 – Linear Programming 19–81 Table 2 Completed Initial Tableau. C 4 5 0 0 Variables in solution x1 x2 s1 s2 Solution quantity 0 s1 1 3 1 0 12 0 s2 4 3 0 1 […]
978-0078024108 Chapter 19 Part 8
Chapter 19 – Linear Programming 19–71 Case: Custom Cabinets, Inc. Problem Formulation: Semi-custom Cabinets Standard Cabinets A = Quantity of Type SC-A S10 = Quantity of Type S-10 B = Quantity of Type SC-B S20 = Quantity of Type S-20 […]
978-0078024108 Chapter 19 Part 7
Chapter 19 – Linear Programming 19–61 16. a. The marginal value (shadow price) of a pound of bark is $1.50 (refer to the Sensitivity Report below for the Shadow Price of C1: Bark). This marginal value is in effect in […]
978-0078024108 Chapter 19 Part 6
Chapter 19 – Linear Programming 13. Formulate the model: A = Quantity of Product A B = Quantity of Product B C = Quantity of Product C A B C Revenue $80 $90 $70 Cost Mat’l #1 2 x $ […]
978-0078024108 Chapter 19 Part 5
Chapter 19 – Linear Programming 19–41 Determine the range of optimality for the three coefficients of the objective function. To determine the range of optimality for each coefficient, we must use the following values found under Variable Cells in the […]
978-0078024108 Chapter 19 Part 4
Chapter 19 – Linear Programming 6. a. The optimal values of the decision variables are: x1 = 4, x2 = 0, x3 = 18. The optimal value of the objective function value = Z = 106. Refer to the Excel […]
978-0078024108 Chapter 19 Part 3
Chapter 19 – Linear Programming 3. Maximize: 40H + 30W Subject to: Fabrication 4H + 2W 600 hours Assembly 2H + 6W 480 hours a. Optimum: H = 132 W = 36 Z = $6,360 The work for […]
978-0078024108 Chapter 19 Part 2
Chapter 19 – Linear Programming Copyright © 2015 McGraw-Hill Education. All rights reserved. No reproduction or distribution without the prior written consent of McGraw-Hill Education. Material 100 90 80 70 60 50 B 19–11 Optimal Solution Labor Machinery Profit 10 […]
978-0078024108 Chapter 19 Part 1
Chapter 19 – Linear Programming 19-1 CHAPTER 19 LINEAR PROGRAMMING Teaching Notes The main goal of this supplement is to provide students with an overview of the types of problems that have been solved using linear programming (LP). In the […]
978-0078024108 Chapter 18 Part 4
Chapter 18 – Management of Waiting Lines 18–31 Education. b. What is the average wait time for service by customers in the various classes (Wq in the template)? Class 1: 0.0333 hours Class 2: 0.0555 hours Class 3: 0.1202 hours […]
978-0078024108 Chapter 18 Part 3
Chapter 18 – Management of Waiting Lines 18–21 b. Determine the optimum number of operators: Machine downtime cost per hour = Average number down x Machine downtime cost per hour Average number of machines running = Average […]
978-0078024108 Chapter 18 Part 2
Chapter 18 – Management of Waiting Lines 18–11 5. Given: = 0.45 calls/hour (Poisson) Mean service time = 2 hours/call (exponentially distributed) M = 2 ambulances [Multiple Servers, M/M/S] We must determine first (we will use hours)μ […]
978-0078024108 Chapter 18 Part 1
Chapter 18 – Management of Waiting Lines 18-1 Education. CHAPTER 18 MANAGEMENT OF WAITING LINES Teaching Notes Some of the math and calculations can be left out to focus more clearly on the concepts of waiting lines. For example, all […]
978-0078024108 Chapter 17 Part 7
Chapter 17 – Project Management 17–60 Education. Start End 1 6 A D B C E F 17. Given: We have the following activities and time estimates: Path Activity Optimistic Most Likely Pessimistic Top A 4 5 6 B 7 […]
978-0078024108 Chapter 17 Part 6
Chapter 17 – Project Management 29 1,300 ($000) 0 30 31 32 33 34 35 Project Length (weeks) The total cost-curve is plotted below: Total Cost 1,400 17–51 Copyright © 2015 McGraw-Hill Education. All rights reserved. No reproduction or distribution […]
978-0078024108 Chapter 17 Part 5
Chapter 17 – Project Management 17–41 Education. A summary of the crashing steps is shown below: Path Initial time Length after crashing 1 week Length after crashing 2 weeks Length after crashing 3 weeks Length after crashing 4 weeks Length […]
978-0078024108 Chapter 17 Part 4
Chapter 17 – Project Management 17–31 Education. b. The project manager will receive a bonus of $1,000 if the project is finished within 26 weeks. P (T ≤ 26): Path A-D-E-H: Expected completion time = 4.00 + 8.00 + 9.17 […]
978-0078024108 Chapter 17 Part 3
Chapter 17 – Project Management 8. Path Expected Duration Variance Std. Dev. A 10 1.21 1.100 B 8 2.00 1.414 C 12 1.00 1.000 D 15 2.89 1.700 E 14 1.44 1.200 a. Probability (Time ≤ 16 weeks): […]
978-0078024108 Chapter 17 Part 2
Chapter 17 – Project Management 4. c. Case 1: Activity-on-Node Diagram Case 2: Activity-on-Node Diagram A D K B E F H I G C M L J P N K R V Q S T W End End Start […]
978-0078024108 Chapter 17 Part 1
Chapter 17 – Project Management CHAPTER 17 PROJECT MANAGEMENT Teaching Notes In managing operations, we are often faced with activities that do not fit into the usual day-to–day operations of the firm. These non-typical, unusual activities of the firm are […]
978-0078024108 Chapter 16 Part 9
Chapter 16 – Scheduling Enrichment Module: Runout Time Method Make-to-stock companies produce different products on a common machine or work center. For example, a paint manufacturing company may decide to mix different colors of paint using the same “mixer.” In […]
978-0078024108 Chapter 16 Part 8
Chapter 16 – Scheduling 16–71 Note 5: There is a tie for the two lowest consecutive requirements (1) between Wed-Thu and Sat- Mon. In case of a tie, pick the pair with the lowest adjacent requirements (day to the left […]
978-0078024108 Chapter 16 Part 7
Chapter 16 – Scheduling 16–61 Education. Determine the average flow time and the average job tardiness for each method: FCFS: Job Job Time (hours) Flow Time (hours) Due Date (hours) Tardy (hours) a 3.5 3.5 7 0.0 b 2.0 5.5 […]
978-0078024108 Chapter 16 Part 6
Chapter 16 – Scheduling 16–51 Education. (d) Job E has the shortest time (4). Because the time for Job E is at Deburring, schedule Job E toward the end of the sequence (5th). Eliminate Job E from further consideration. 1st […]
978-0078024108 Chapter 16 Part 5
Chapter 16 – Scheduling 16–41 12. Given: A shoe repair operation uses a two-step procedure that all jobs in a certain category follow. The jobs are shown below: Time (minutes) Job WS A WS B A 27 45 B 18 […]
978-0078024108 Chapter 16 Part 4
Chapter 16 – Scheduling 16–31 Education. (b) Order B has the shortest time (0.90). Because the time is at Step 1, schedule Order B first (1st) . Eliminate Order B from further consideration. 1st 2nd 3rd 4th 5th 6th 7th […]
978-0078024108 Chapter 16 Part 3
Chapter 16 – Scheduling 16–21 Education. Job D is scheduled third. At day 21 + 6 = 27 [Job D completed], only Job B remains. Job B is scheduled fourth and will be completed on day 27 + 10 = […]
978-0078024108 Chapter 16 Part 2
Chapter 16 – Scheduling 16–11 Note: A minimum of five lines is needed. There are five rows. Because the minimum number of lines equals the number of rows, an optimum assignment can be made. Step 6: Make the assignments. Begin […]
978-0078024108 Chapter 16 Part 1
Chapter 16 – Scheduling 16-1 CHAPTER 16 SCHEDULING Teaching Notes Scheduling techniques are designed to disaggregate the master production schedule into time-phased daily or hourly activities. A detailed production schedule must include when and where each activity must take place […]
978-0078024108 Chapter 15 Part 2
Chapter 15 – Supply Chain Management 15-9 Education. f. Procurement: Purchasing is responsible for obtaining materials, parts, supplies, and services needed to produce a product or provide a service. Purchasing is very important to a firm because for a manufacturing […]
978-0078024108 Chapter 15 Part 1
Chapter 15 – Supply Chain Management 15-1 Education. CHAPTER 15 SUPPLY CHAIN MANAGEMENT Teaching Notes It is important to emphasize that supply chain management involves the entire range of production and distribution processes. Students need to understand the tradeoffs involved […]
978-0078024108 Chapter 14 Part 2
Chapter 14 – JIT and Lean Operations Copyright © 2015 McGraw-Hill Education. All rights reserved. No reproduction or distribution without the prior written consent of McGraw-Hill 5. Given: Processing order = A-B-C-D-E. Service Operation Number of Daily Reps A 22 […]
978-0078024108 Chapter 14 Part 1
Chapter 14 – JIT and Lean Operations CHAPTER 14 JIT AND LEAN OPERATIONS Teaching Notes JIT and Lean operations seem to be two of the most popular subjects for students. Some are a bit skeptical at first, but most are […]
978-0078024108 Chapter 13 Part 7
Chapter 13 – Inventory Management 13–61 Education. Operations Tour: Bruegger’s Bagel Bakery 1. If too little inventory is maintained, there is a risk of a stockout and potential lost sales. In addition, if there is not sufficient work-in–process inventory, the […]
978-0078024108 Chapter 13 Part 6
Chapter 13 – Inventory Management 38. Given: Demand can be approximated with a Poisson distribution with a mean of 6 per day. It costs $9 to prepare each cake. Fresh cakes sell for $12 each. Day-old cakes sell for $9 […]
978-0078024108 Chapter 13 Part 5
Chapter 13 – Inventory Management 13–41 Education. 26. Given: d = 5 boxes/week d = .5 boxes/week LT = 2 weeks S = $2 H= $.20/box/ year a. Assuming a 52-week year, determine the EOQ: D = 52 x […]
978-0078024108 Chapter 13 Part 4
Chapter 13 – Inventory Management 16. Given: D = 800 * 12 = 9,600 S = $40 H = 25% of purchase cost Price Schedule Supplier A: Range Price per Unit (P) 1-199 $14.00 200-499 $13.80 500+ $13.60 Price Schedule […]
978-0078024108 Chapter 13 Part 3
Chapter 13 – Inventory Management 13–21 Education. 10. Given: A chemical firm produces 100-pound bags. Demand for the product = 20 tons per day. The capacity = 50 tons per day. Setup cost = $100, and storage and handling costs […]
978-0078024108 Chapter 13 Part 2
Chapter 13 – Inventory Management 13–11 Education. Step 1: Determine the Annual Dollar Value (Usage * Unit Cost) for each item and the sum of the individual Annual Dollar Values. Item Usage Unit Cost Annual Dollar Value 4021 90 $1,400 […]
978-0078024108 Chapter 13 Part 1
Chapter 13 – Inventory Management CHAPTER 13 INVENTORY MANAGEMENT Teaching Notes This is a fairly long and important chapter. Important points are: 1. Good inventory management is important for successful organizations. 2. The key inventory management issues are when to […]
978-0078024108 Chapter 12 Part 7
Chapter 12 – MRP and ERP 12–59 H(3) LT = 1 Lot size: Lot-for-Lot Beg. Inv. 1 2 3 4 5 6 7 8 Gross requirements 240 720 Scheduled receipts 50 Projected on hand 0 0 50 50 0 0 […]
978-0078024108 Chapter 12 Part 6
Chapter 12 – MRP and ERP 15. Given: A company has the following demand for its products, labor and machine standards, and available capacities: Week number 1 2 3 4 Material (tons) 40 80 60 70 Labor Machine Production standard […]
978-0078024108 Chapter 12 Part 5
Chapter 12 – MRP and ERP 12–41 12. Given: 200 carts must be ready at the beginning of week 8. The product structure tree, assembly time chart, and inventory information are shown in the solutions below: a. Product structure tree: […]
978-0078024108 Chapter 12 Part 4
Chapter 12 – MRP and ERP Copyright © 2015 McGraw-Hill Education. All rights reserved. No reproduction or distribution without the prior written consent of McGraw-Hill G & G(2) LT = 2 Lot size: Multiples of 80 Beg. Inv. 1 2 […]