Mighty Muffler, Inc. operates an automobile service facility that specializes in replacing mufflers on compact cars. The following table shows the costs incurred during a month when 500 mufflers were replaced. Fill in the missing amounts. (Round "cost per muffler" to 2 decimal places.)

Number of Muffler Replacements 500 400 600 Total costs: $ 44,000 24,000 $ 68,000 Fixed costs Variable costs Total costs Cost per muffler replacement: Fixed cost Variable cost Total cost per muffler replacement