Answer:
$180,000
Step-by-step 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 residual income serve a company to track its performance. It is a financial metric to assess company's internal performance. The formula to calculate the residual income is,
RI = Net operating Income - (Required rate of return * Cost of operating assets)
RI = $420,000 - (15% * $1,600,000 )
RI = $180,000