The following data resulted from a time study taken on a horizontal milling machine: Mean manual effort
Question:
Mean manual effort time per cycle: 4.62 minutes.
Mean cutting time (power feed): 3.74 minutes.
Mean performance rating: 115%
Machine allowance (power feed): 10 percent.
Fatigue allowance: 15 percent.
What is the standard time for the operation?
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Related Book For 
Niebels Methods, Standards and Work Design
ISBN: 978-0073376318
13th edition
Authors: Andris Freivalds, Benjamin Niebel
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