Answer :
The new length of the project if activity F is crashed by 5 days will be 440 days
Activity F is represented by a duration of 12 days.
If the activity is crashed by 5 days, the new length of the project will be calculated as follows:
Total duration = Sum of all activities in the critical path.
Initial duration = 42 + 79 + 59 + 49 + 48 + 20 + 12 + 89 + 5 + 10 + 12
= 484
New Duration of Activity F = 12 - 5
= 7
New Total Duration = 42 + 79 + 59 + 49 + 48 + 20 + 7 + 89 + 5 + 10 + 12
= 440
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