In response to complaints about high prices, a grocery chain runs the following advertising campaign: If you pay your child $2 to go buy $50 worth of groceries, then your child makes twice as much on the trip as we do." You've collected the following information from the grocery chain's financial statements: (millions) Sales $ 680.0 Net income $ 13.6 Total assets $410.0 Total debt $280.0 What is the profit margin for child and store? Profit margin 3.32 X Child % Store 10.46 X What is the store's ROE? (Round the final answer to 2 decimal places.) ROE 68.29 %