What is the total float of an activity for which

Earliest Start time ES = 5

Earliest Finish time EF = 15

Latest Start time LS = 35

Latest Finish time LF = 45

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  1. 10
  2. 20
  3. 30
  4. 40

Answer (Detailed Solution Below)

Option 3 : 30
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Detailed Solution

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Explanation:

Total float: 

Total Float/Slack = Latest Finish time (LF) - Earliest Start time (ES) - (Earliest Finish time EF - Earliest Start time ES  )or Total Float/Slack = Latest Finish time (LF) - Earliest Finish time (EF) OR = Latest start time (LS) - Earliest start time (ES)

If we use the  formula with the given values, we get:

Total Float = LS - ES = 45 - 15 = 30 OR  45 - 15 = 30

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