Problem $11-19($Algo$)$ Comparison of Performance Using Return on Investment $($ROI$)[$LO$11-1]$

Comparative data on three companies in the same service industry are given below.

Required:

$2.$ Fill in the missing information. $($Round the "Turnover" and "ROI" answers to $2$ decimal places.$)$

$\backslash$table$[[$Sales$,$Company$],[A,$B$,$C$],[$$$,2,688,000,,$$$,1,380,000,,,6,555,000,],[$Net operating income,$$,510,720,,$$$,207,000,,,,],[$Average operating assets,$$,1,680,000,,,,,,3,450,000,],[$Margin$,,19,\%,,,\%,,5,\%$