Question: 3. (18 points) According to the data given in the following table (the time is in weeks). Activity Normal Time Crash Time A B D

3. (18 points) According to the data given in the following table (the time is in weeks). Activity Normal Time Crash Time A B D E F G H I Preceding Activity N/A A A B E, F DE 3 3 4 6 2 4 5 6 4 2 1 2 3 1 3 3 4 3 Crashing Cost per week 1100 1500 1400 1000 600 1800 3000 2500 2000 G H a) Please construct an activity-on-arrow(AOA) network diagram for this project. Then finish the forward and backward pass analysis to determine the critical path and find the project duration. (8 pts) b) If you need to shorten the project duration by 5 weeks, what is the cheapest way to shorten the project? What is the total Crashing Cost for that? Please show the crashing schedule and the new critical path. (10 pts)

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