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.
Order Order Size
(units) Per Unit Time in
Heat Treatment
(minutes/unit) Due Date
(min. from now)
A 16 4 160
B 6 12 200
C 10 3 180
D 8 10 190
E 4 1 220
a. If the due date rule is used, what sequence should be used?
The sequence is A-C-D-B-EB-A-C-D-EC-A-B-E-DD-E-A-C-BE-A-B-C-D.
b.
What will be the average job tardiness? (Round your answer to 2 decimal places.)
Average job tardiness
c.
What will be the average number of jobs in the system? (Round your answer to 2 decimal places.)
Average number of jobs
d. Would the Shortest processing time rule produce better results in terms of average job tardiness?(Round your answer to the nearest whole number.)