Industrial Engineering and Production Management
A big advantage of PERT over Gantt charts is that in the former case

Activity times are clear
Interrelationship among activities is clearly shown
Early start and late finish of an activity are clearly marked
Activities and events are clearly shown

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Industrial Engineering and Production Management
Critical Path Net Work helps an engineer

To divert the resources from noncritical advanced activities to critical activities
All of these
To concentrate his attention on critical activities
To be cautious for avoiding any delay in the critical activities to avoid delay of the whole project

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