Float time: the amount of time by which a non-critical activity can be delayed without having an effect of the overal project
FLOAT TIME = LFT - DURATION - EST
Critical activities: those with zero float time, which cannot be delayed
Non-critical activities: those with float time which can be delayed by a certain time period without affecting the whole project
When working out CPA, EST's and LFT's, always start with the EST, working left to right, using the larger number. Then, work backwards, right to left with the LFT, using the smaller number.
The critical path is shown using //
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