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 %. (Enter your response rounded to one decimal place.) More Info X Earnings and Expenses (Year Ending January 2012) Sales $30,000,000 Cost of goods sold (COGS) $25,000,000 Pretax earnings $2,580,000 Selected Balance Sheet Items Merchandise Inventory $1,290,000 Total assets $6,000,000 a. Dulaney's current profit margin is. _%. (Enter your response rounded to one decimal place.) Dulaney's current yearly ROA is _%. (Enter your response rounded to one decimal 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.)