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%. (Enter your response rounded to one decimal a. Dulaney's current profit margin is place.) %. (Enter your response rounded to one decimal Dulaney's current yearly ROA is place.) b. Suppose COGS and merchandise inventory were each cut by 15%. The new pretax profit margin is %. (Enter your response rounded to one decimal place.) The new ROA is %. (Enter your response rounded to one decimal place.) c. Based on the current profit margin in part a., Dulaney would have to generate $ in additional sales in order to have the same effect on pretax earnings as a 15% decrease in merchandise costs. (Enter your response rounded to the nearest dollar.) Earnings and Expenses (Year Ending January 2012) Sales $100,000,000 Cost of goods sold (COGS) $85,000,000 Pretax earnings $8,300,000 Selected Balance Sheet Items Merchandise Inventory $4,150,000 Total assets $6,000,000