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Question:

If Activity A has an early start of 10, an early complete of 16, and a late start of 12, what is the total float of the activity?

A 2
Explaination

Total float refers to the amount of time you can delay the earliest start of an activity without delaying the earliest start of an activity without delaying the ending of the project. To calculate total float, subtract either the early start from the late start or the early finish from the late finish (both give you the same answer).