A Print Shop Has Five Large Commercial Printing Jobs to Finish

question 31

Essay

A print shop has five large commercial printing jobs to finish. They are trying to decide whether to use the shortest processing time (SPT) or the first come, first served (FCFS) sequencing rule. Data on estimated processing time (in hours) and time to promised completion (in hours) is as follows (jobs shown in order of arrival):
$\begin{array}{|c|c|c|}\hline \text { Job } & \text { Processing time } & \text { Time to promised completion } \\\hline \text { A } & 4 & 8 \\\hline \text { B } & 9 & 30 \\\hline \text { C } & 5 & 17 \\\hline \text { D } & 8 & 8 \\\hline \text { E } & 11 & 12 \\\hline\end{array}$
a.What is the average flow time in hours using the FCFS rule?
b.What is the average job lateness in hours using the FCFS rule?
c.What is the average flow time in hours using the SPT rule?
d.What is the average job lateness in hours using the SPT rule?

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Definitions:

Incidental Damages

These are secondary expenses or losses incurred due to a breach of contract, such as storage or transportation costs.

Rightfully Rejected

This term refers to the lawful refusal of accepting goods or services due to non-compliance with contractual terms.

Inspection

The process of examining and assessing something carefully to ensure it meets specific standards or criteria.

CISG

The United Nations Convention on Contracts for the International Sale of Goods, a set of rules governing the sale of goods between businesses located in different countries.