Suppose that Bill owns an automobile collision repair shop. The following table shows how the quantity of cars Bill can repair per month depends on the number of workers he hires. Assume that he pays each worker $4,000 per month and his fixed cost is $6,000 per month. Using the information provided, fill in the missing values in the following table.

Quantity Quantity Fixed Variable Total | Average of of Cars Cost Cost Cost Total Workers per Cost Month O $6,000 20 2 30 3 40 4 50