Answer:
ROI 15%
Residual Income $1,350,000
Explanation:
Residual Income is the difference between net income of the company and the required rate of return. It determines the excess of income generate than the minimum return. The formula to calculate the residual income is,
RI = Net operating Income - (Required rate of return * Cost of operating assets)
RI = $4,500,000 - (21% * $15,000,000 )
RI = $1,350,000
ROI =
Capital Employed = Sales - Average operating assets
ROI = 15%
Residual income is positive when the department has meet the minimum return requirement. Minimum return is the return that is required by the company stakeholders. The particular projects and activities are selected on the basis of residual income.