ou are planning to move and have posted for sale three computer monitors on a local classified ads website. Assume all three monitors are the same. Five people have notified you they are interested in purchasing one monitor and will come by today. Suppose the time it takes each person to arrive to be independent and identically distributed following an exponential distribution with a mean of 25 minutes and it is with probability one that they will buy a monitor, if one is available. How long do you expect to wait until all three monitors get sold