Response to the following problem:
Larry Pembroke is a repair person for Copyco, a firm that has copying machines located at libraries, supermarkets, and court houses. Larry is responsible for maintaining the copiers assigned to him. On the average, each copier needs service once every 25 working days. Including travel time to the location, Larry spends an average of half a day repairing a copier machine.
Copyco's management wishes to determine how many copiers should be assigned to Larry so that, on the average, a copier is out of commission for no more than one day.