Table 10.7
The framing department has six jobs waiting to be processed. It is now time zero and all jobs are ready to begin. Each has only one operation remaining. All jobs arrived at the same time, and FCFS begins with job A, then B, etc.

-Using the information in Table 10.7 and the earliest due date (EDD) rule, what is the average days past due?
A) fewer than or equal to 5 days
B) greater than 5 days but fewer than or equal to 9 days
C) greater than 9 days but fewer than or equal to 13 days
D) greater than 13 days

Question

Table 10.7
The framing department has six jobs waiting to be processed. It is now time zero and all jobs are ready to begin. Each has only one operation remaining. All jobs arrived at the same time, and FCFS begins with job A, then B, etc.
 
-Using the information in Table 10.7 and the earliest due date (EDD) rule, what is the average days past due?
A) fewer than or equal to 5 days 
B) greater than 5 days but fewer than or equal to 9 days 
C) greater than 9 days but fewer than or equal to 13 days 
D) greater than 13 days

Quizplus · Accepted Answer

Using the EDD rule, we prioritize jobs based on their due date. For this set of jobs, job D has the earliest due date of 14 days. Therefore, we process job D first. However, processing job D would result in job E being past due by 12 days, which is greater than any other job's due date. Therefore, we process job E next, followed by job C and job A. Job F is the last job to be processed, and it is completed before its due date. Therefore, the average days past due for all jobs is (12+3+0+0+0+0)/6 = 2.5 days, which is greater than 0 but less than or equal to 5. Therefore, the answer is C.

Table 10.7 The Framing Department Has Six Jobs Waiting to Be Processed