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 answers to the nearest whole number. Omit the "$" and "%" signs in your response.)

Company A B C Sales $ 340,000 $ 660,000 $ 690,000 Net operating income $ ? $ 52,000 $ ? Average operating assets $ 161,000 $ ? $ 154,000 Return on investment (ROI) 22% 21% ? % Minimum required rate of return: Percentage 16% ?% 10% Dollar amount $ ? $ 52,000 $ ? Residual income $? $ ? $4,000