Operations Management
17th Edition
ISBN: 9781259142208
Author: CACHON, Gérard, Terwiesch, Christian
Publisher: Mcgraw-hill Education,
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Textbook Question
Chapter 19, Problem 5PA
A project activity has an earliest completion time of 5, an activity time of 3, and a latest completion time of 6. What is the slack time for the activity?
- a. 1
- b. 2
- c. 3
- d. 4
- e. 5
- f. 6
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Students have asked these similar questions
Ans c. The earliest starting time for activity H is 15 days
Ans d. The latest start time for activity J is 25 days.
Ans e. The critical path is A-B-H-I-L-M with the minimum duration of the project as 28 days
This is a follow up question please do f and g
A project activity has an earliest completion time of 5, an activity time of 3, and a latestcompletion time of 6. What is the slack time for the activity?a. 1b. 2c. 3d. 4e. 5f. 6
B/U
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Activity
A
B
D
11. A project has the activity duration and cost information indicated in the table where all
times are in weeks. There is a penalty of $4,000 per week for every week the project
exceeds 37 weeks. What is the lowest total cost for completing this project?
Predecessor Time
18
11
A
A
B
C
E
D
Normal
A
H
12
15
3
19
Asbe de ABC' AMBBC RACE AB
7
8
12
6
Normal
Cost
Crash Time Crash Cost
$22,000
$32,000
$62,000
$18,000
$35,000
$8,000
$23,000
$32,000
$56,000
$12,000 5
$18,000
19
$22,000
$9,000
$15,000
$5,000
$13,000
$20,000
$45,000
2
5
4
Chapter 19 Solutions
Operations Management
Ch. 19 - A project has four activities that take 4, 3, 6,...Ch. 19 - Consider the simple dependency matrix shown in...Ch. 19 - Consider a project with two activities that are...Ch. 19 - Prob. 4CQCh. 19 - Prob. 5CQCh. 19 - Prob. 6CQCh. 19 - Prob. 7CQCh. 19 - Prob. 8CQCh. 19 - Prob. 9CQCh. 19 - Prob. 10CQ
Ch. 19 - Consider two projects that have the same...Ch. 19 - Prob. 12CQCh. 19 - Prob. 13CQCh. 19 - Prob. 14CQCh. 19 - The key objectives of a project are given by a....Ch. 19 - Which of the following descriptions best captures...Ch. 19 - Prob. 1PACh. 19 - Prob. 2PACh. 19 - Prob. 3PACh. 19 - Prob. 4PACh. 19 - A project activity has an earliest completion time...Ch. 19 - What is the definition of the latest completion...Ch. 19 - Which of the following statements is correct with...Ch. 19 - A project consists of three tasks: A, B, and C....Ch. 19 - Prob. 9PACh. 19 - Prob. 10PACh. 19 - You manage a project with 10 activities....Ch. 19 - Which of the following activities is not part of...Ch. 19 - You have been asked by the CEO of your company to...Ch. 19 - BUILDING A HOUSE IN THREE HOURS Habitat for...Ch. 19 - BUILDING A HOUSE IN THREE HOURS Habitat for...
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- . 1. Project Scope & Constraints The new payroll system project has been approved. The new system will reduce clerical time and errors, improve morale in the payroll department, and avoid possible fines and penalties for noncompliance. The system must be installed by January 1st to meet new federal reporting rules, all expenses must be approved in advance, and the system should have a modular design if possible. The new system is expected to be announced in a year-end report if it is ready by mid-December. 1. Why is it important to define the project scope? How would you describe the scope of the payroll project in this case? 2. Based upon the project scope, identify the constraints, and determine its characteristics: present versus future, internal versus external, and mandatory versus desirable. 3. What questions would you ask to determine the feasibility of this project? 4. Given the project time constraints, could you shorten the typical steps in the preliminary investigation…arrow_forwardActivity 1 2 3 4 5 6 7 8 9 10 11 12 13 14 A B 1 с D E F G H The slack time of activity H is a. 0 b. 5 c. 2 d. 6 The number of days the project needs to complete is a. 14 b. 15 c. 13 d. 20 The slack time of activity C is a. 1 b. 2 c. 3 d. 4 The number of activities that are parallel to activity F is a. 1 b. 2 c. 3 d. 4 The number of critical activities is a. 5 b. 6 c. 7 d. 8 15 16 17 18 19 20arrow_forwardYou are in charge of a project at the local community center. The center needs to remodel one of the rooms in time for the start of a new program. Delays in the project mean that the center must rent other space at a nearby church at additional cost. Time and cost data for your project are contained in 7.10. Your interest is in minimizing the cost of theproject to the community center.a. Using the normal times for each activity, what is the earliest date you can complete the project?b. Suppose the variable overhead costs are $50 per day for your project. Also, suppose that the center must pay $40 per day for a temporary room on day 15 or beyond. Find the minimum-cost project schedule.arrow_forward
- d. How long the program is expected to finish? e. Determine the slack time for each activity using either LS & ES or LF and EF. f. What is the probability of finishing in 75 days?arrow_forwardSuppose you have a project with a Budget at Completion (BAC) of $250,000 and a projected length of 10 months. After tracking the project for six months, you have collected the information in the table below. a. Complete the table. How do Earned Value SPI (based on $) and Earned Schedule SPI differ? b. Calculate the schedule variances for the project for both Earned Value and Earned Schedule. How do the values differ?arrow_forward3. Who creates the project schedule?arrow_forward
- The information in the table below is available for a large fund-raising project. Activity Activity Times (days) Activity Cost ($) Immediate Predecessor A 3 100 None B 4 150 None C 2 125 A D 5 175 B E 2 150 B F 4 200 C, D G 6 75 C H 2 50 C, D, E I 1 100 E J 4 75 D, E K 5 350 F, G L 3 150 G, H, I M 4 400 I, J N 4 175 K, M O 1 200 H, M P 5 150 N, L, O Draw the precedence network diagram. Perform the CPM (Critical Path Method) and give the complete activity schedule table, the project completion time, and the critical path. Plot on the same graph the total project costs per day, starting from day one to the completion date, assuming the earliest start times and then assuming the latest start times. What implications does the time differential have for cash flows and project scheduling? Show step by step solutionarrow_forward(a) What is Work Breakdown Structure (WBS)? Explain in light of a building construction project while clearly give emphasis on task, duration and resources. (b) Explain the five different proformas of Planning Commission of Pakistan used in project life cycle phases. (c) Explain the following. 1. Present worth analysis 2. Effective interest rate . please solve this perfectly. subject: : Project Planning, Management & Engineering Economics 3. Project life cyclearrow_forwardYou have been assigned a project and in your preliminary planning you have developed table 2 below, it outlines eight activities (A to H) that must be completed. For each activity you have obtained the estimated duration, cost per day and the prior task(s). Activity A B с D E F G H Z Duration (days) 3 4 12 6 16 15 Cost/week ($) 2500 6000 3000 10000 15000 10000 7 8 0 Prior Tasks None B, D C, E E, F,G 0 All *Assume that there are five (5) workdays in each week Table 2 2000 2500 A A, B A, B D Using the information provided: a) Create a network diagram for the project. b) Construct a Gantt Chart for the project. c) Determine the minimum time in which the project can be completed. 1arrow_forward
- You are developing a performance progress report for a project you are managing. The following time-phased budget was developed earlier in the planning stage and is being used as the standard against which the project performance is measured. Work Packages A B C Total W1 4 4 W2 8 8 W3 2 W4 5 5 W5 9 19 W6 6 6 You are analyzing the project performance at the end of Week 5. Activity "C" is 80% complete and its actual cost is 15. What is the schedule variance of this activity? Use two decimal places in your calculations.arrow_forwardActivities/Assessments: Activity 12: Individual Given the activities of a project; their optimistic (t.), most likely (tm) and pessimistic (tp) time estimates; and their immediate predecessors shown below: 1. When is the earliest project completion? 2. Which activities are critical (should not be delayed)? 3. Which activities are noncritical (can be delayed)? 4. How long can each of the activities be delayed without delaying the whole project (maximum slack)? Activity Times, months tp 13 Immediate Maximum Slack, Activities Predecessors to tm te months A 1 4 A 4 7 16 A 2 2 D C 4 6 14 E 1 3 5 F E 13 10 13 H G 7 14 В, D F, H, I I 1 1 J 16 25 M7613arrow_forwardThe following activities are part of a project to be scheduled using CPM: TIME (WEEKS) 7 6 ACTIVITY IMMEDIATE PREDECESSOR A BCDEFG O A-C-D-E-G O A-B-E-G O A-C-D-F-G O A-B-D-F-G AACB A Number of weeks A b. What is the critical path? B, D D E, F 24346 c. How many weeks will it take to complete the project?arrow_forward
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