Eight jobs have been sequenced at a single work centre. Total processing time for the eight jobs is 34 hours and total flow time for the sequence is 85 hours. For this schedule, utilization is ________ and average jobs in the system is ________.
A) 100% ; 10.625
B) low; .0941
C) 0.400 or 40%; 2.5
D) 0.235 or 23.5%; 4.25
E) maximized; minimized

Question

Quizplus · Accepted Answer

Utilization can be calculated as total processing time divided by total flow time. 
Utilization = 34/85 = 0.4 or 40%

Average jobs in the system can be calculated as total flow time divided by processing time of each job. 
Average jobs in the system = 85/34 = 2.5

Therefore, the best choice is C, which provides the correct values for utilization and average jobs in the system.

Eight Jobs Have Been Sequenced at a Single Work Centre