A Print Shop Has Four Jobs That Have to Be

question 59

Multiple Choice

A print shop has four jobs that have to be processed through their only five-color press. They usually use the first come, first served (FCFS) rule of scheduling jobs. However, the customers are waiting in the lobby for these jobs so the shop wants to minimize the average waiting time. They are going to use the shortest processing time rule to do so. Processing times for each job are as follows (assume this is the arrival order) : Job A, 30 minutes; Job B, 17 minutes; Job C, 12 minutes; and Job D, 39 minutes.
-Using the shortest processing time (SPT) rule to sequence these jobs, the average waiting (flow) time is _____.

• A) less than or equal to 20 minutes
• B) more than 20 but less than or equal to 30 minutes
• C) more than 30 but less than or equal to 40 minutes
• D) more than 40 but less than or equal to 50 minutes

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Definitions:

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A feature in software applications that provides users with a shortcut to execute a sequence of commands or actions.

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A feature in some software applications, such as Microsoft Office programs, that provides access to advanced development tools and options for customizing and automating tasks.

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A graphical control element at the bottom of an application window that displays information about the current state of the application or document.

Word Count

The total number of words in a document or passage.