Question

Fletcher would like to determine the early start (ES), early finish (EF), late start (LS), late finish (LF), and slack for each activity. The durations for the activities are: A = 5, B = 8, C = 2, D = 2. What are the ES, EF, LS, LF, and slack for each activity?

Answer 1

The question lacks sufficient information such as dependencies among activities to accurately calculate ES, EF, LS, LF, and slack. Assuming independent activities, ES equals LS and EF equals LF for each activity, with zero slack, as there would be no float without dependencies.

Step-by-step explanation:

To determine the early start (ES), early finish (EF), late start (LS), late finish (LF), and slack for activities A, B, C, and D, we need a basic understanding of project management techniques, specifically the Critical Path Method (CPM) calculations. However, we lack a project network diagram or dependency details among the activities. For an accurate calculation, these are essential. Assuming that these activities are independent, which is not usually the case in project management scenarios, the ES for each activity would be at time zero, and the EF would be the duration of the activity since there are no preceding activities. In that same scenario, LS and LF would equal ES and EF, respectively, because there would be no float or slack without dependencies. In short, without additional information concerning the order and dependencies of tasks, we can only presume that ES equals LS and EF equals LF for each task. Therefore, the slack would be zero for all activities.