Industrial Engineering and Production Management
Activity slack or float of any event on a PERT/CPM chart is represented by

Latest start time of the event earliest start time of the event
Anyone of the above
Latest finish time of event earliest finish time of the event
Latest start time of succeeding event earliest finish time of preceding event activity time

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Industrial Engineering and Production Management
The purpose of micro-motion study is to

Train the individual operator regarding the motion economy principles
Help in collecting the motion time data for synthetic time standards
All of these
Assist in finding out the most efficient way of doing work

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