Two Troubleshooters Handle Service Calls for 10 Machines

Essay

Two troubleshooters handle service calls for 10 machines.The average time between service requirements is 18 days, and service time averages 2 days.Assume exponential distributions.While running, each machine can produce 1,500 pieces per day.Determine:
(A) the percentage of time troubleshooters are idle
(B) each machine's net productivity
(C) If troubleshooters represent a cost of $150 per day, and machine downtime cost is $600 per day, would another troubleshooter be justified? Explain.