GATE ME 2020 Set 2 — Question 33
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Question
Consider the following network of activities, with each activity named A-L, illustrated in the nodes of the network.
The number of hours required for each activity is shown alongside the nodes. The slack on the activity L, is ______ hours.

Correct answer
2 to 2
Solution
To find the slack on activity L, we first find the critical path and its duration.
Possible paths from START to FINISH:
Slack on activity L = hours.
Possible paths from START to FINISH:
1.A-B-C-F-I-J-K: hours
2.A-B-C-E-K: hours
3.A-B-C-D-G-H-L: hours
The critical path is A-B-C-F-I-J-K with duration hours.Slack on activity L = hours.
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