19,766 answers
1.
The process sequence according to FCFS is A-B-C-D-E-F
2.
Job
Processing time (days)
Due date (days)
Start
Finish
Flow time
Tardiness
A
6
22
0
6
6
0
B
12
14
6
18
18
4
C
14
30
18
32
32
2
D
2
18
32
34
34
16
E
10
25
34
44
44
19
F
4
34
44
48
48
14
Totals
48
182
55
Average
30.33
9.17
(a) Makespan = 48 days
(b) Average flow time = 30.33 days
(c) Average tardiness = 9.17 days
(d) Average number of jobs in the system = Total flow time / Total processing time = 182 / 48 = 3.79