Question

The earliest start time for a specific activity must be _________ the latest of all the earliest finish times of all the activities leading directly into that specific activity.

Question 17 options:

	earlier than
	the same as
	the same as or later than
	later than

Answer 1

Answer: Option 3

Rationale: The ES of an activity = the highest predecessor's EF, therefore if there are two activities leading to the activity then the ES of the activity is equal to the activity that has the highest EF and later than the activity that has a smaller EF.

In the above diagram, activity B and C lead to D. The ES of activity D is the same as the EF of activity B as it is the highest value whereas it is later than the EF of activity C that leads to activity D.