Construction Planning and Management
Optimistic time, most likely time and pessimistic times for the activities of a network in the given figure are written above their arrows. If the contractual obligation time for the project is 75, the latest occurrence time for the event 2, is

20
15
35
25

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Construction Planning and Management
Latest start of an activity is always

less than or equal to latest event time of preceding node
greater than or equal to latest event time of preceding node
less than latest event time of preceding node
equal to latest event time of preceding node

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