(d) Assume that the company wants to complete the project in six months or 26 weeks. What is the amount of crash time (in weeks) for each activity that minimizes cost? (A, B, C, D, E) = 1,2,3,1,2 Wrong answear need help with D please!! (e) Need help please!! Develop an activity schedule for the crashed project. Activity Earliest Start Latest Start Earliest Finish Latest Finish Slack A           B           C           D           E           F           (f)What added project cost (in thousands of dollars) is required to meet the six-month completion time? thousands of dollars? what is the total? Need Help please!!

Practical Management Science
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I only need help with D,E,F ONLY PLEASE!!
 
Office Automation Inc., developed a proposal for implementing a software system that will standardize the accounts payable function by automatically issuing an electronic payment upon receipt of the vendor invoice. Contained in the proposal is a list of activities that must be accomplished to complete the project. The following table contains relevant information about the activities.
      Time (weeks) Cost ($1,000s)
Activity Description Immediate
Predecessor
Normal Crash Normal Crash
A Plan needs   10 8 30 70
B Order equipment A 8 6 120 150
C Install equipment B 10 7 100 160
D Set up training lab A 7 6 40 50
E Conduct training course D 10 8 50 75
F Test system C, E 3 3 60  
(a)
Develop a project network.
A project network with 8 activities and 8 directed arcs is shown.
  • Activity Start is connected to activity A.
  • Activity A is connected to activity B and to activity C.
  • Activity B is connected to activity D.
  • Activity C is connected to activity E.
  • Activity D is connected to activity F.
  • Activity E is connected to activity F.
  • Activity F is connected to activity Finish.
  • Activity Finish has no arcs directed to other activities.
A project network with 8 activities and 8 directed arcs is shown.
  • Activity Start is connected to activity A.
  • Activity A is connected to activity B and to activity D.
  • Activity B is connected to activity C.
  • Activity C is connected to activity F.
  • Activity D is connected to activity E.
  • Activity E is connected to activity F.
  • Activity F is connected to activity Finish.
  • Activity Finish has no arcs directed to other activities.
A project network with 8 activities and 8 directed arcs is shown.
  • Activity Start is connected to activity A.
  • Activity A is connected to activity B and to activity D.
  • Activity B is connected to activity E.
  • Activity C is connected to activity F.
  • Activity D is connected to activity C.
  • Activity E is connected to activity F.
  • Activity F is connected to activity Finish.
  • Activity Finish has no arcs directed to other activities.
A project network with 8 activities and 8 directed arcs is shown.
  • Activity Start is connected to activity A.
  • Activity A is connected to activity B and to activity C.
  • Activity B is connected to activity E.
  • Activity C is connected to activity D.
  • Activity D is connected to activity F.
  • Activity E is connected to activity F.
  • Activity F is connected to activity Finish.
  • Activity Finish has no arcs directed to other activities.
(b)
Develop an activity schedule.
Activity Earliest
Start
Latest
Start
Earliest
Finish
Latest
Finish
Slack
A          
B          
C          
D          
E          
F          
(c)
What are the critical activities? (Enter your answers as a comma-separated list.)
A,B,C,F
 
What is the expected project completion time (in weeks)?
weeks
(d)
Assume that the company wants to complete the project in six months or 26 weeks. What is the amount of crash time (in weeks) for each activity that minimizes cost?
(A, B, C, D, E) = 1,2,3,1,2 Wrong answear need help with D please!!
(e) Need help please!!
Develop an activity schedule for the crashed project.
Activity Earliest
Start
Latest
Start
Earliest
Finish
Latest
Finish
Slack
A          
B          
C          
D          
E          
F          
(f)What added project cost (in thousands of dollars) is required to meet the six-month completion time?
thousands of dollars? what is the total? Need Help please!!
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