The Following Jobs Must Be Processed in the Super Clean

The following jobs must be processed in the Super Clean motor center. Assume that the company operates seven days per week.
Job Arrival Date Work Required (in Days) Due Date
A Nov. 1 8 Nov. 16
B Nov. 4 1 Nov. 11
C Nov. 2 20 Nov. 21
D Nov. 3 5 Nov. 13
E Nov. 6 3 Dec. 2
F Nov. 5 4 Dec. 10
Today is November 10. If the company decides to use EDD as the priority rule, calculate the (a) average flow time, (b) average number of jobs in the system, and (c) average job tardiness.