Question

The owner/operator of the local franchise of Handyman, Inc., has four jobs to do today, shown...

The owner/operator of the local franchise of Handyman, Inc., has four jobs to do today, shown in the order they were received:

Processing Due

Job Time (days) Date (Days)
W 4 4
X 3 5
Y 2 2
Z 1 1
If he uses the shortest processing time first (SPT) priority rule to schedule these jobs, what will be the average number of jobs in his shop today?
A.
0

B.
1

C.
2

D.
3

E.
4

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Homework Answers

Answer #1

Answer: C-2

Explanation:

Job are sequenced according to SPT-Shortest processing time

Job

Duration

Due date

In flow time

Out Flow time

Z

1

1

0

1

Y

2

2

1

3

X

3

3

3

6

W

4

4

6

10

total

20

Average no. of Jobs per day= (sum job flow times)/ No. days to complete batch

                           = (20)/10 = 2 job

0 0
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