PM.66 Real estate developer Russell Call was working with a few contractors to make a number of improvements to one of his rental properties. Aftergathering information from these contractors he determined the following durations, predecessors, and costs of all the required activities:Normal Cost Crashed Cost Predecessor(s)Activity Normal Time (weeks) Crashed Time (weeks)A32BсDEFGDO EOC64What is the overall duration of the project?16OGOB7634Which of the following activities has the lowest crash cost per week?OAOD523322Which of the following activities has the highest crash cost per week?OC$1,050$2,120$1,300$2,200$1,800$4,150$1,600$3,200$2,500$2,400$2,400$2,400If you wanted to shorten the overall duration of the project, which activity should you crash first?OBEOA$5,260$2,050What is the total cost of crashing the project from its original duration to 11 weeks?NumberWhat is the total cost of crashing the project from its current duration down to 13 weeks?625ABCD, E

Project crashing is a process which reduces the total duration of the project using additional costs…

Answered: PM.66 Real estate developer Russell…

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter2: Introduction To Spreadsheet Modeling

Section: Chapter Questions

Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...

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Coleman Rich Control Devices, I nc., producescustom-built relay devices for auto makers. The most recent projectundertaken by Rich requires 14 different activities. Rich's managerswould like to determine the total project completion time(in days) and those activities that lie along the critical path. Theappropriate data are shown in the following table.a) What is the probability of being done in 53 days?b) What date results in a 99% probability of completion?
Jordanne King, the project manager for Webjets International, Inc., compiled a table showing time estimates for each of the activities of a project to upgrade the company’s Web page, including optimistic, most likely, and pessimistic.a. Calculate the expected time, te, for each activity.b. Calculate the variance, s2, for each activity.Activity Optimistic (days) Most Likely (days) Pessimistic (days)A 3 8 19B 12 15 18C 2 6 16D 4 9 20E 1 4 7
15. Three activities are candidates for crashing on a project network for a large computer installation (all are, of course, critical). Activity details are in the following table: Activity Normal Time (days) Crash Time (days) Normal Cost Total Cost with Crashing Immediate Predecessor(s) A 7 6 $4,500 $5,000 — B 4 2 $1,400 $3,300 A C 11 9 $4,000 $6,000 B Part 2 a) Activity that should be crashed first to reduce the project duration by 1 day is __ Part 3 b) Activity that should be crashed next to reduce the project duration by one additional day is __ . Part 4 c) Total cost of crashing the project by 2 days = $ ____ (Enter your response as an integer.)
8. Dave Fletcher was able to determine the activity times for constructing his laser scanning machine. Fletcher would like to determine ES, EF, LS, LF, and slack for each activity. The total project completion time and the critical path should also be determined. Here are the activity times: Activity Time (weeks) Immediate Predecessor(s) Activity Time (weeks) Immediate Predecessor(s) A 7 − E 4 B B 6 − F 5 B C 4 A G 11 C, E D 2 A H 8 D , F Part 2 Dave's earliest start (ES) and earliest finish (EF) are: Activity ES EF A ___ 7 Activity ES EF B ____ Activity ES EF C _____ Activity ES EF D ___ Activity ES EF E ___ Activity ES EF F __ Activity ES EF G ____…
15. Three activities are candidates for crashing on a project network for a large computer installation (all are, of course, critical). Activity details are in the following table: Activity Normal Time (days) Crash Time (days) Normal Cost Total Cost with Crashing Immediate Predecessor(s) A 7 6 $5,000 $5,600 — B 4 2 $1,400 $3,100 A C 11 9 $4,000 $6,200 B Part 2 1) Activity that should be crashed first to reduce the project duration by 1 day is ▼ A B C 2) Activity that should be crashed next to reduce the project duration by one additional day is A B C 3) Total cost of crashing the project by 2 days =$_____________.
3.8 Roger Ginde is developing a program in supply chain management certification for managers. Ginde has listed a num- ber of activities that must be completed before a training program of this nature could be conducted. The activities, immediate pre- decessors, and times appear in the accompanying table: a) DrawtheappropriateAONPERTdiagramforJ.C.Howard’s management team. b) Find the critical path. c) What is the project completion time? • • 3.11 The following is a table of activities associated with a project at Rafay Ishfaq’s software firm in Chicago, their dura- tions, and what activities each must precede: ACTIVITY DURATION (WEEKS) PRECEDES A (start) 1 B, C B 1 E C 4 F E 2 F F (end) 2 — ACTIVITY IMMEDIATE PREDECESSOR(S) TIME (DAYS) A — 2 B — 5 C — 1 D B…
21. The following table provides the information necessary to construct a project network and project crash data: Activity (i, j) Activity Predecessor Activity Time (weeks) Normal Crash Activity Cost Normal Crash a (1,2) --- 16 8 $2000 $4400 b (1,3) --- 14 9 1000 1800 c (2,4) a 8 6 500 700 d (2,5) a 5 4 600 1300 e (3,5) b 4 2 1500 3000 f (3,6) b 6 4 800 1600 g (4,6) c 10 7 3000 4500 h (5,6) d, e 15 10 5000 8000 a. Construct the project network b. Manually crash the network to 28 weeks Note:- Do not provide handwritten solution. Maintain accuracy and quality in your answer. Take care of plagiarism. Answer completely. You will get up vote for sure.
Consider the following activity description with associated cost data shown in Table 1. The cost data represents the total cost and should be considered linear with time. Table 1: Crash Cost Table Activity Immediate Predecessor Normal Duration (days) Normal Cost ($) Crash Duration (days) Crash Cost ($) A --- 5 50 3 150 B --- 4 40 2 200 C B 7 70 5 250 D A, C 2 20 1 50 E A, C 5 125 1 525 F B 10 80 7 290 G D 7 50 3 250 H E, F 6 60 3 180 Reduce the project duration to minimum duration and calculate the cost. Note:- Do not provide handwritten solution. Maintain accuracy and quality in your answer. Take care of plagiarism. Answer completely. You will get up vote for sure.
Gabrielle Kramer, owner of Pet Paradise, is opening a new store in Columbus, Ohio. Her major concern is the hiring of a manager and several associates who are animal lovers. She also has to coordinate the renovation of a building that was previously owned by a chic clothing store. Kramer has gathered the data shown in Table 7.14.a. How long is the project expected to take?b. Suppose that Kramer has a personal goal of completing the project in 14 weeks. What is the probability that it will happen this quickly?
The project manager of Good Public Relations gathered the data shown in Table 7.15 for a new advertising campaign.a. How long is the project likely to take?b. What is the probability that the project will take more than 38 weeks?c. Consider the path A–E–G–H–J. What is the probability that this path will exceed 38 weeks?
Using PERT, Adam Munson was able to determinethat the expected project completion time for the construction ofa pleasure yacht is 21 months, and the project variance is 4.a) What is the probability that the project will be completed in17 months?b) What is the probability that the project will be completed in20 months?c) What is the probability that the project will be completed in23 months?d) What is the probability that the project will be completed in25 months?e) What is the due date that yields a 95% chance of completion?
Coleman Rich Control Devices, Inc., produces custom-built relay devices for auto makers. The most recent project undertaken by Rich requires 14 different activities. Rich's managers would like to determine the total project completion time (in days) and those activities that lie along the critical path. The appropriate data are shown in the following table: Time (days) Immediate Time (days) Immediate Activity a m b Predecessor(s) Activity a m b Predecessor(s) A 4 7 8 — H 3 3 6 E, F B 1 2 3 — I 3 7 9 G, H C 7 7 7 A J 2 6 9 I D 6 9 13 A K 8 9…

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