Solve the problem using Arena Simulation or by hand with all calculations. ASAP please

Consider a small car service station with a full-time server and a manager. Arriving cars have exponentially distributed interarrival times with an expected interarrival time of one sixth of an hour. The service time is also exponentially distributed with a mean service time of 5 minutes. However, if the server is busy and there are cars waiting for service, the manager inside comes out and helps service the cars. The service time of the manager is exponentially distributed with a mean service time of 8 minutes. Run the simulation for 10,000 hours. Answer the following questions: a) What is the average time for customers waiting for and receiving service? b) What is the longest waiting time in the queue? c) What is the utilization for the manager? d) What is the utilization for the server