Industrial Engineering and Production Management
In order that linear programming techniques provide valid results

Either (A) or (B)
Only one factor should change at a time, others remaining constant
Relations between factors must be linear (negative)
Relations between factors must be linear (positive)

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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
Assist in finding out the most efficient way of doing work
All of these

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