In response to complaints about high prices, a grocery chain runs the following advertising campaign: "If you pay your child $6 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 $ 586 Net income 32 Total assets 485 Total debt 393 What is the ROE for the store? (In %)