Mary Smith operates a major appliance warranty servicecenter. Her operation has two check stations that are required at the end ofevery repair task performed by his appliance repair staff. These are theFunctionality Review (FR) and the Overall Scan (OS). The FR must be performedsuccessfully before the OS is begun. On Friday morning, six repair jobs arecompleted, awaiting these two inspection activities. Processing times are givenin minutes.
|
Job |
FR |
OS |
|
A |
30 |
50 |
|
B |
35 |
15 |
|
C |
20 |
25 |
|
D |
35 |
20 |
|
E |
10 |
15 |
|
F |
25 |
10 |
a. What is the optimal sequence of jobs for the objective ofminimizing the total flow time? Show all your work, and document the sequence.
b.Chart the solution to this problem.
c.What is the total flow time of this problem?
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