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Dulaney's Stores has posted the following yearly earnings and expenses. Click the icon to view the yearly data. a. Dulaney's current profit margin is Dulaney's current yearly ROA is \%. (Enter your response rounded to one decimal place.) \%. (Enter your response rounded to one decimal place.) b. Suppose COGS and merchandise inventory were each cut by 5%. The new pretax profit margin is \%. (Enter your response rounded to one decimal place.) The new ROA is 49.8%. (Enter your response rounded to one decimal place.) c. Based on the current profit margin in part a., Dulaney would have to generate 9 in additional sales in order to have the same effect on pretax earnings as a 5% decrease in merchandise costs (Enter your response rounded to the nearest dollar.) More Info