Table J.15
Consider the following problem in which four jobs that arrived this morning are to be processed on two machines. They start with the cutting machine and then go to the painting machine. The following processing times are available (in hours):

-Use the information in Table J.15. What is the makespan through both machines if Johnson's rule is used?
A) fewer than or equal to 30 hours
B) greater than 30 hours but fewer than or equal to 32 hours
C) greater than 32 hours but fewer than or equal to 34 hours
D) greater than 34 hours

Question

Table J.15
Consider the following problem in which four jobs that arrived this morning are to be processed on two machines. They start with the cutting machine and then go to the painting machine. The following processing times are available (in hours):
 
-Use the information in Table J.15. What is the makespan through both machines if Johnson's rule is used?
A) fewer than or equal to 30 hours 
B) greater than 30 hours but fewer than or equal to 32 hours 
C) greater than 32 hours but fewer than or equal to 34 hours 
D) greater than 34 hours

Quizplus · Accepted Answer

Johnson's rule minimizes the makespan.

Table J.15 Consider the Following Problem in Which Four Jobs That Arrived