Supply the missing data for three service companies shown in the table below: Note: Loss amounts should be indicated by a minus sign. Round your percentage answers to nearest whole percent.

$\backslash$table$[[,$Company$],[,$A$,$B$,$C$],[$Sales$,$$$,9,240,000,,$$$,7,400,000,,$$$,4,860,000,],[$Net operating income,,,,$$,306,000,,,,],[$Average operating assets,$$,3,080,000,,,,,$$$,1,944,000,],[$Return on investment $($ROI$),,15,\%,,18,\%,,,\%$