The following table shows the data collected about a project.

For the above project:

(a) Draw an activity-on-arrow diagram showing the duration of each activity, the earliest start and latest finish times

(b) Draw an activity-on-node diagram

(c) Determine the completion time and the project cost

(d) Identify the critical activities

(e) Calculate the total and free floats.

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Table 9.6 Activity Immediate Estimated time predecessors (days) Cost per day A B 2 50 B 3 60 CDE B 4 70 C, A 2 40 D 3 30 F HGT E 1 75 B 15 20 G, H 3 50