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

Sales $370,000$840,000$540,000Net operating income $39,250$47,000Average operating assets $157,000$261,111$157,000Return on investment (ROI) 25%18%%Minimum required rate of return: Percentage 15%%10%Dollar amount $23,550$60,000Residual income $16,700$5,000