A family friend has asked your help In analyzing the operations of three anonymous companles operating in the same service sector Industry. Supply the missing data In the table below: $($Loss amounts should be Indlcated by a minus sign.$)$

$\backslash$table$[[,$Company A$,$Company B$,$Company C$],[$Sales$,$$$9,000,000,,$$$,7,000,000,,$s$,4,500,000,],[$Net operating income,,,$$,280,000,,,,],[$Average operating assets,$$3,000,000,,,,,$S$,1,800,000,],[$Return on investment $($ROI$),18,\%,,14,\%,,,\%$