A project manager is developing a project schedule using the Precedence Diagramming Method (PDM). An activity within the schedule has a calculated Late Start (LS) of day 22 and a duration of 5 days. What is the Late Finish (LF) for this activity?
Day 26
Day 28
Day 27
Day 17
The correct answer is day 27. The formula for calculating the Late Finish (LF) in the Critical Path Method is: LF = Late Start (LS) + Duration. In this scenario, LF = 22 + 5 = 27. This calculation is a core component of the backward pass analysis in schedule network diagramming and is crucial for determining the project's critical path and the float of individual activities. The other answers are based on incorrect calculations, such as subtracting one day from the total (22 + 5 - 1 = 26), which is a common mistake based on an alternative but less standard counting convention.
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