Which is the total float for the activity G?

Question

Options

• A0
• B3
• C5
• D10

• A
  12% (6)
• B
  6% (3)
• C
  79% (41)
• D
  4% (2)

Explanation

Total float is calculated as Late Start minus Early Start (LS − ES) or equivalently Late Finish minus Early Finish (LF − EF). For activity G, the values from the network diagram yield a difference of 5, meaning G can be delayed up to 5 time units without pushing back the project completion date.

Why the distractors are wrong:

• A (0) would mean G is on the critical path with zero slack - but G has scheduling flexibility, so it is not critical.
• B (3) may result from confusing free float (delay before affecting a successor) with total float (delay before affecting the project end), or from a miscalculation of the path durations.
• D (10) overstates the slack and likely comes from using incorrect late/early dates - perhaps reading the wrong node values from the network diagram.

Memory tip: Think of total float as your "project budget" of delay - it's always measured against the project's final deadline, not just the next activity. When in doubt, trace the longest path to the end node; total float = (that path's latest allowable dates) minus (earliest possible dates) for your activity.

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