A service is offered to consumers from 9 A.M. to 5 P.M., Monday through Friday. The service experiences downtime from 3 P.M. to 5 P.M. on Wednesday of a given week.
Service Availability (SA) = (Agreed Service Time(AST)-Downtime/AST) x 100 So, Agreed service time = 8 hours per day x 5 = 40 hours Downtime = 2 hours SA = (40-2/40) x 100 = 95.00%
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