What is the return on investment for the prior year? RUSH DELIVERY COMPANY Income Statement Comparison (Amounts in thousands) Sales Cost of goods sold Gross profit Wages Utilities Repairs Selling Total expenses Operating income/(loss) Operating income/(loss) % Total assets (investment base) Return on investment Residual income (8% cost of capital) Current Year Prior Year $15,000 $11,000 9,750 7,480 $5,250 $3,520 $3,900 $3,080 300 250 75 325 225 200 $4,500 $3,855 ? ? ? ? $4,500 $1,500