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. Do not round your intermediate calculations.$)$

$\backslash$table$[[,$Company A$,$Company B$,$Company C$,,,],[$Sales$,$$$,420,000,,$$$,840,000,,$$$,600,000,],[$Net operating income,,,,$$,44,000,,,,],[$Average operating assets,$$,158,000,,,,$$$,142,000,,],[$Return on investment $($ROI$),17,\%,,17,\%,,,\%,],[$Minimum required rate of return:,,,,,,,,,$],[$Percentage$,,17,\%,,,\%,,12,\%],[$Dollar amount,,,,$$,54,000,,,,],[$Residual income,$$,0,,,,$$$,7,000,,]]$