An Automobile Emission Testing Center Has Six (6) Inspectors and Tests

Multiple Choice

An automobile emission testing center has six (6) inspectors and tests 50 vehicles per hour. What should the service rate be in order to achieve 90% utilization?

A) Less than 5 vehicles per hour
B) More than 5 but less than or equal to 10 vehicles per hour
C) More than 10 but less than or equal to 15 vehicles per hour
D) More than 15 but less than or equal to 20 vehicles per hour