The following income statement is provided for Ramirez Company for the current year. Sales revenue (1,600 units * $19.10 per unit) Cost of goods sold (variable; 1,600 units X $7.10 per unit) Cost of goods sold (fixed) Gross margin Administrative salaries Depreciation Supplies (1,600 units * $1.10 per unit) Net income $ 30,560 (11,360) (3,100) 16,100 (5,100) (3,100) (1,760) $ 6,140 What amount was the company's contribution margin