Wakayama Inc. operated an automobile service facility, which specializes in replacing mufflers on cars. The following table shows the cost incurred during a month when 750 mufflers were replaced. Fill in the missing amount

	Number of Muffler Replacements
	500	800	1, 000
Total Fixed cost	1.	P100, 000	2.
Total Variable cost	3.	P40, 000	4.
Total cost	5.	P140,000	6.
Fixed cost per replacement	7.	8.	9
Variable cost per replacement	10.	11.	12
Total cost per replacement	13.	14.	15.