Eva, the owner of Eva's Second Time Around Wedding Dresses, currently has five dresses to be...
Eva, the owner of Eva's Second Time Around Wedding Dresses,
currently has five dresses to be altered, shown in the order in
which they arrived:
| Job | Processing Time (hrs) | Due (hrs from now) |
||||||
| V | 3 | 5 | ||||||
| W | 1 | 1 | ||||||
| X | 4 | 9 | ||||||
| Y | 2 | 3 | ||||||
| Z | 5 | 7 | ||||||
If Eva uses the earliest due date first (EDD) priority rule to
schedule these jobs, what will be the average job tardiness?
Homework Answers
| Job | Processing Time (hrs) | Flow Time | Due (hrs from now) | Lateness |
| W | 1 | 1 | 1 | 0 |
| Y | 2 | 3 | 3 | 0 |
| V | 3 | 6 | 5 | 1 |
| Z | 5 | 11 | 7 | 4 |
| X | 4 | 15 | 9 | 6 |
| Total | 36 | 11 |
Total Delay is 11 hours for 5 jobs
Average job tardiness = Total Lateness/no. of jobs
= 11/5 = 2.5 hours
average job tardiness = 2.5 hours
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