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Normal and Standard Time

A job, consisting of four elements, was randomly observed five times for a time study. The following table shows the results (figures are in seconds):

Work Elements Observations Performance Rating
1. Prepare patty 40 41 50 48 36 0.8
2. Cook first side 78 81 77 89 83 1.1
3. Flip, press, cook the other side 54 55 59 58 63 1.3
4. Assemble 28 24 27 26 32 0.9

A. What is the Normal Time (in seconds) for each work element?
B. What is the Standard Time (in seconds) for the job if there is a 20% of the job time allowance for personal needs and unavoidable work delays?

Solution Preview

A. Normal Time = Average(Observation) * Performance Rating
B. Standard Time = Normal Time * (1+0.2)

Work Observations ...

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