Results from First Corporation’s most recent year of operations is presented in the ­following table.
Operating income.......................................... $ 7,560
Total assets..................................................... $ 12,000
Current liabilities............................................ $ 4,500
Sales............................................................... $ 27,000
Target rate of return....................................... 16%

Requirements
1. Calculate the sales margin, capital turnover, and return on investment (ROI).
2. Calculate the residual income (RI).