Table J.16 Five Jobs Are Currently Waiting to Be Processed. Each Job

Multiple Choice

Table J.16
Five jobs are currently waiting to be processed. Each job has to go through Machine 1 first and then Machine 2 before it is completed. The processing times (in hours) for the five jobs on each machine are:

-Use the information in Table J.16. What is the makespan through both machines if Johnson's rule is used?

A) fewer than or equal to 26 hours
B) greater than 26 hours but fewer than or equal to 27 hours
C) greater than 27 hours but fewer than or equal to 28 hours
D) greater than 28 hours