Problem 5. Mighty Muffler, Inc. operates an automobile service facility, which specializes in replacing mufflers on cars. The following table shows the costs incurred during a month when 750 mufflers were replaced. Number of Muffler Replacements 400 500 800 Total costs Fixed costs P50,000 b Variable costs 60,0001 d Total costs 110,000 Cost per muffler replacement Fixed cost h Variable cost k Total cost per replacement a C e Im Required: Fill in the missing amounts