Question: The Budd Gear Co. specializes in heat- treating gears for automobile companies. At 8: 00 a. m., when Budds shop opened today, five orders (listed

The Budd Gear Co. specializes in heat- treating gears for automobile companies. At 8: 00 a. m., when Budd€™s shop opened today, five orders (listed in order of arrival) were waiting to be processed.

a. If the earliest due date rule is used, what sequence should be used?
b. What will be the average job tardiness?
c. What will be the average number of jobs in the system?
d. Would the SPT rule produce better results in terms of jobtardiness?

Per Unit Time in (minutes/unit) 12 Due Date (min. from now) 160 Order Size at Treatment unite) Order 16 180 190 220 10 10

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