The following four jobs must each be processed on two machines starting with Machine A and then going to Machine B. The following processing times are available (in hours):
|
Job
|
Processing Time
Machine A
|
Processing Time
Machine B
|
|
A
|
1
|
5
|
|
B
|
8
|
3
|
|
C
|
3
|
9
|
|
D
|
7
|
8
|
What is the minimum makespan for this group of jobs?
A) Less than or equal to 23 hours
B) More than 23 hours but less than or equal to 25 hours
C) More than 25 hours but less than or equal to 27 hours
D) More than 27 hours