Given the following information on job times and due dates.   Job Job Time (Hours) Due Date (Hours) a 3.5 7   b 2.0 6   c 4.5 18   d 5.0 22   e 2.5 4   f 6.0 20       a-1. Determine the optimal processing sequence using (1) First come, first served, (2) Shortest processing time, (3) Earliest due date, and (4) Critical ratio.       Sequence for First come, first served       Sequence for Shortest processing time   Sequence for Earliest due date   Sequence for Critical ratio       a-2. For each method, find the average job flow time and the average job tardiness. (Round your answers to 2 decimal places.)     First Come, First Served   Shortest Processing Time   Earliest Due Date Critical Ratio Average flow time             Average job tardiness

Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
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Given the following information on job times and due dates.
 

Job Job Time
(Hours)
Due Date
(Hours)
a 3.5 7  
b 2.0 6  
c 4.5 18  
d 5.0 22  
e 2.5 4  
f 6.0 20  
 

 
a-1. Determine the optimal processing sequence using (1) First come, first served, (2) Shortest processing time, (3) Earliest due date, and (4) Critical ratio.
 

   
Sequence for First come, first served      
Sequence for Shortest processing time  
Sequence for Earliest due date  
Sequence for Critical ratio  
 

 
a-2. For each method, find the average job flow time and the average job tardiness. (Round your answers to 2 decimal places.)
 

  First Come, First
Served
  Shortest Processing
Time
  Earliest Due Date Critical Ratio
Average flow time            
Average job tardiness
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