3. A pizza business has the cost structure described below. The fi rm’s fi xed costs are

$25 per day. Calculate the fi rm’s average fi xed costs, average variable costs, average total costs, and marginal costs.

Output Total cost

(pizzas per day) of output 0 $25 10 75 20 115 30 150 40 175 50 190 60 205 70 225 80 250