Suppose that you have a business in which you hire five workers, to whom you pay $4 an hour. Suppose further that you have overhead costs of $100 a day and that you pay $1 in materials cost fo each item that your business manufactures. Assuming that you keep all five workers, what is your average cost per unit of output if your plant turns out 10 items per 8-hour day? 100 items? 1,000?