Cass Company has recorded the following information for the last six months of operations from its cost of quality system:

	Quarter 1	Quarter 2
Revenue	$ 780,000	$ 940,000
Costs
Warranty expense	$ 15,600	$ 14,600
Machine calibration	4,200	8,160
Customer returns (defects)	23,200	19,200
Material inspection on receiving dock	9,520	6,320
Waste	19,400	15,520
Quality testing equipment	19,100	12,500
Rework	2,680	4,450
Inspection before packaging	8,000	9,700
Training on testing equipment	6,600	9,800

Required:

Calculate the ratio (percentages) of the prevention, appraisal, internal failure, and external failure costs to sales for Quarter 1 and Quarter 2.