Problem 18.25 ROI, residual income The following financial data are for the evaluation of performance for Kimberley Mining: Average operating assets $500,000 Net operating income $65,000 Minimum required rate of return 10% Kimberley Mining currently uses return on investment to evaluate investment centre managers. An accounting intern from the local university suggested to the controller that residual income may be a better performance measure. Required (Round answer to 0 decimal places.) Calculate ROI for Kimberley Mining. % Calculate residual income for Kimberley Mining