In the Critical Path Method (CPM), the total float of an activity is:
Choose the correct answer
The amount of time by which the activity duration can be reduced
The maximum time the activity can be delayed without delaying the overall project completion (= LFT - EST - Duration)
The free float minus the independent float
The sum of all activity durations
Correct Answer
B. The maximum time the activity can be delayed without delaying the overall project completion (= LFT - EST - Duration)
Why is this the answer?
Total float TF = LFT - EST - D = LST - EST = LFT - EFT (where LFT = latest finish time, EST = earliest start time, D = duration). Critical activities have TF = 0. Free float = EFT(next activity) - EFT(current). Independent float = EST(next) - LFT(preceding) - D (can be negative). Critical path = longest duration path with TF = 0.
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