Given the following project network where the times are in weeks and the costs in $:
Task Normal Time Crash Time Normal Cost Crash Cost IP
A 6 4 8000 14000 –
B 1 1 4000 4000 A
C 8 4 8000 24000 –
D 5 3 10000 24000 C
E 9 5 10000 18000 B,C
F 12 6 20000 36000 D,E
G 3 2 10000 18000 F
a. Determine the critical time.
b. Identify the critical path(s)
c. What is the minimum time that this project can be completed?
d. What is the total cost to achieve the answer in part c?
e. What is the optimal system crash time assuming there is a $10,000 per week penalty for
every 20 weeks?
f. What specific tasks are crashed and by how much?
g. What is the total system cost associated with the answer in part f?
