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Problem 16-8

The following table shows orders to be processed at a machine shop as of 8:00 a.m. Monday. The jobs have different operations they must go through. Processing times are in days. Jobs are listed in order of arrival.


JobProcessing
Time (Days)		Due Date
(Days)		Remaining Number
of Operations
A8        202
B12        184
C4        255
D11        173
E9        354

a.Determine the processing sequence at the first work center using each of these rules: (1) First come, first served, (2) Slack per operation.

  
  Sequence for First come, first served  
  Sequence for Slack per operation  

b.Compute the effectiveness of each rule using each of these measures: (1) average completion time, (2) average number of jobs at the work center. (Round your answers to 2 decimal places.)

 First Come, First ServedSlack per Operation
  Average completion time  

b.

What will be the average job tardiness? (Round your answer to 2 decimal places.)


  Average job tardiness new average job tardiness is [removed] minutes.

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