12–27 A project manager discovers that his team has neglected to complete the ne
ID: 458687 • Letter: 1
Question
12–27 A project manager discovers that his team has neglected to complete the network diagram for the project. The network diagram is shown in Figure P12–27. However, the project manager has some information available, specifically that each activity, labeled A–G, has a different duration between one and seven weeks. Also, the slack time for each of the activities is known as shown in Figure P12–27 in ascending order.
Duration (weeks): 1, 2, 3, 4, 5, 6, 7
Slack time (weeks): 0, 0, 0, 2, 4, 4, 7
Using the clues provided below, determine the duration of each activity as well as the early start, early finish, latest start and latest finish times for each activity.
Clues
1.Activity E is on the critical path.
2.The early start (ES) time for activity F is five weeks.
3.The duration of activity B is seven weeks.
4.Activity D has four weeks of slack, but activity F has a greatest amount of slack.
5.The early finish (EF) time for activity G is seventeen weeks.
6.The latest finish (LF) time for activity E is thirteen weeks.
Activity Duration Early Start Early Finish Latest Start Latest Finish
A ________ _________ __________ __________ _________
B ________ _________ __________ __________ _________
C ________ _________ __________ __________ _________
D ________ _________ __________ __________ _________
E ________ _________ __________ __________ _________
F ________ _________ __________ __________ _________
G ________ _________ __________ __________ _________
Explanation / Answer
Activity Duration ES EF LS LF Slack A 3 0 3 4 7 4 B 7 0 7 0 7 0 C 5 0 5 2 7 2 D 2 7 9 11 13 4 E 6 7 13 7 13 0 F 1 5 6 12 13 7 G 4 13 17 13 17 0
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