a.
Interpretation: The makespan is to be computed, after sequencing the painting jobs using the longest processing time (LPT) priority rule.
Concept Introduction: Makespan is a measure of efficiency. It refers to the amount of time taken to complete a set of tasks.
b.
Interpretation: The mean job flow time for the six jobs of SPP is to be computed based on longest processing times rule.
Concept Introduction: Job flow time is a measure of a company’s response time. It refers to the time a specific job spends in the shop before it is completed.
c.
Interpretation: The average number of jobs in the system based on longest processing time (LPT) rule is to be computed.
Concept Introduction: The average number of jobs in the system measures the work-in-progress stock. The more the number of jobs to be performed in queue, the longer would be the flow time. This is also a measure of responsiveness of the company.
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