Charles Berkle is the manager of Nogain Manufacturing and is interested in doing a cost of quality analysis. The following cost and revenue data are available for the most recent year ended December 31. Sales revenue $ 250,000 Cost of goods sold 140,000 Warranty expense 22,000 Inspection costs 11,000 Scrap and rework 8,800 Product returns due to defects 6,000 Depreciation expense 10,000 Machine maintenance expense 1,500 Wage expense 35,000 Machine breakdown costs 4,000 Estimated lost sales due to poor quality 5,000

a. Classify each of these costs into the four quality cost categories and prepare a cost of quality report for Nogain.

b. What percentage of sales revenue is being spent on prevention and appraisal activities?

c. What percentage of sales revenue is being spent on internal and external failure costs?