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Critical path for project at normal completion time

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17. What is the critical path for this project at normal completion time?
A. A-E-G
B. B-E-G
C. A-D-G
D. C-F-G

18.What is the normal project completion time?
A. 25 weeks
B. 10 weeks
C. 4 weeks
D. 14 weeks

19. Which activity on the critical path has the lowest weekly crash cost?
A. A
B. B
C. C
D. D
E. G

20. What is the crash cost per week for activity G?
A. 2000
B. 1500
C. 1000
D. 250

21. Write the mathematical representation of the objective function to minimize the crash cost for this project.

22.What is the mathematical representation for the crash time constraint of activity D?
A. YD<=7
B. YD<=3
C. YD<=4
D. YD<=5000

23. In the linear program to crash this project, why would activity G require two network constraints?
A. The difference between the normal time and the crash time is 2 weeks
B. G has two predecessor activities
C. The crash cost is 2000
D. all of the above

25. Use either CPM crashing of the LP method to calculate this: What is the total extra cost to the company for completing this project in 10 weeks with minimal crashing expenses?
A. 1000
B. 1600
C. 400
D. 600

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17. What is the critical path for this project at normal completion time?
A. A-E-G
B. B-E-G
C. A-D-G
D. C-F-G

Answer: ADG, as it is the longest path (14 weeks)

18.What is the normal project completion time?
A. 25 weeks
B. 10 weeks
C. 4 weeks
D. 14 weeks

Time of Critical Path = 3+7=4 = 14 weeks

19. Which activity on the critical path has the lowest weekly crash cost? ...

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