For an activity in a Single Time Estimate CPM analysis the Early Finish time is 20 and the Late Finish time is 20.Which of the following statements is true?
A)The activity's late start must happen before its early start
B)The activity is on the critical path
C)The slack for this activity is 20
D)The duration of this activity is zero
E)The duration of this activity is 20

Question

Quizplus · Accepted Answer

If the early finish time and the late finish time are the same, it means there is no slack available for the activity. Therefore, the activity is on the critical path, which means any delay in this activity will cause a delay in the project's overall duration. The statement in option A is incorrect because the late start time cannot happen before the early start time. The statement in option C is incorrect because the slack for this activity is zero, not 20. The statement in option D is incorrect because the duration cannot be zero, as the activity has started and finished. The statement in option E is incorrect because the duration is the difference between the early finish and early start times or the late finish and late start times, which is zero in this case.

For an Activity in a Single Time Estimate CPM Analysis