Six jobs are to be processed through a? two-step operation. The first operation involves? sanding, and...

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General Management

Six jobs are to be processed through a? two-step operation. Thefirst operation involves? sanding, and the second involvespainting. Processing times are as? follows:
Job Operation 1 (hours) Operation 2 (hours)
A 4 8
B 10 5
C 3 11
D 14 14
E 6 1
F 7 12
A) Using? Johnson's rule for? 2-machine scheduling, thesequence? is:
b) For the schedule developed using? Johnson's rule, the totallength of time taken to complete the six jobs? (including the 2nd?operation) =

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AnswerA Job sequence CAFDBEb Total length of time taken to complete the six jobsincluding the 2nd operation 54 hrsExplanationJohnsons Ruleall jobs and times for each work center are listed firstThe job with the shortest activity time is chosen If that timeis in the first work center the job is scheduled in the beginningside of the sequence If it is in the second work center the jobis scheduled in the bending side of the See Answer

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