Response to the following problem:
Randy Powell is responsible for maintaining the 60 personal computers at the Upbid.com corporate office. On the average a computer needs servicing by Randy once every 40 days, and Randy spends an average of 2 hours servicing a computer.
If Randy works 8 hours a day and the time between when a computer needs servicing and the service time follow an exponential distribution, determine the average time (in days) it will take for a computer to finish being serviced.