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

 

Click here for the Excel Data File

 

a. If the earliest due date rule is used, what sequence should be used?

 

 

 

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

c. What will be the average number of jobs in the system? (Round your answer to 2 decimal places.)
 
 

 d. Would the Shortest processing time rule produce better results in terms of average job tardiness? (Round your answer to the nearest whole number.)