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There are six jobs in a factory. All these jobs have to go through two workstations for processing. Each job is processed on Workstation #

There are six jobs in a factory. All these jobs have to go through two workstations for processing. Each job is processed on Workstation #1 and then on Workstation #2. The processing time for each job on each workstation is given below.
Job
Time on Workstation #1(minutes)
Time on Workstation #2(minutes)
1
26
42
2
22
10
3
8
29
4
26
16
5
43
45
6
40
29
Using Johnson's sequencing rule, it can be concluded that the makespan of the sequence is:
a. more than 130 but less than or equal to 155 minutes.
b. more than 155 but less than or equal to 175 minutes.
c. more than 175 but less than or equal to 195 minutes.
d. more than 195 but less than or equal to 220 minutes.

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