A project manager is using the Critical Path Method (CPM) to analyze a project schedule. They find that Activity X has an Early Start (ES) of 10 days and a Late Start (LS) of 15 days. What is the float for Activity X?
25 days
15 days
5 days
10 days
The correct answer is 5 days. In the Critical Path Method, float (also known as slack) is calculated as the difference between the Late Start (LS) and the Early Start (ES) of an activity. The formula for float is:
Float = LS - ES
In this case: Float = 15 days - 10 days = 5 days
Float represents the amount of time an activity can be delayed without affecting the project's overall duration. Activities with zero float are considered critical activities and form the critical path. Understanding float is crucial for project managers as it helps in prioritizing tasks and managing schedule constraints effectively.
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