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Question 4
Critical path = B-E-G = 7 + 11 +5 = 23
To complete the project, it will take 23 days.
Following are the ES, LS, EF and LF of each activity
Slack time of each activity
Activity 2 = 3
Activity 3 = 0
Activity 4 = 3
Activity 5 = 0
Activity 6 = 0
Question 12
Network Diagram
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Critical Path = A2 – A3 – A4 - A5 – A7 – A8 – A9
Estimated Completion Time = 69 days
Question 14
The critical path: A – D – G – J
The above activities need to be observed closely.
If activity B is delayed by 2 more days, it will also delay the project by 2 days as the activity G is dependent on both Activity A and B to be completed on time – and are both considered critical.
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