A family friend has asked your help in analyzing the operations of three anonymous companies operating in the same service sector industry. Supply the missing data in the table below: (Loss amounts should be indicated by a minus sign. Round your percentage answers to nearest whole percent and other amounts to whole dollars.) Sales Net operating income Average operating assets Return on investment (ROI) Minimum required rate of return: Percentage Dollar amount Residual income A Company B C $ 320,000 $ 660,000 $ 510,000 $ 54,000 $ 169,000 $ 151,000 17 % 19 % % 15 % % $ 49,000 $ 60 15 % 6,000