Question 3

The following table shows orders to be processed at a machine.

Job	Processing Time (days)	Due Date (days)
A	8	20
B	10	18
C	5	25
D	11	17
E	9	35

a. Determine the processing sequence using each of these priority rules: (1) CR, (2) MST, (3) SPT, (4) EDD.

Rule	Sequence
CR	(Click to select) D-B-A-E-C C-E-A-B-D E-C-A-B-D A-D-C-B-E
MST	(Click to select) D-B-A-C-E C-E-A-B-D E-C-A-B-D A-D-C-B-E
SPT	(Click to select) C-A-E-B-D C-E-A-B-D E-C-A-B-D A-D-C-B-E
EDD	(Click to select) D-B-A-C-E C-E-A-B-D E-C-A-B-D A-D-C-B-E

b. Determine the performance of each rule using (1) average flow time, (2) average days late. (Round the final answers to 1 decimal place.)

	CR	SPT	EDD & MST
Average flow time
Average days late

c.	Is one rule superior to the others?
	Yes No