Computation of selected ratios. The following data is given: December 31, 2018 $ 56,000 $ 50,000 100,000 90,000 383,000 2017 Cash Accounts receivable (net) Inventories Plant assets (net) 60,000 110,000 325,000 Accounts payable Salaries and wages payable Bonds payable 8% Preferred stock, $40 par Common stock, Sl0 par Paid-in capital in excess of par Retained earnings 55,000 10,000 70,000 100,000 120,000 80,000 194,000 40,000 5,000 70,000 100,000 90,000 65,000 175,000 Net credit sales Cost of goods sold Net income 900,000 600,000 63,000 Instructions Compute the following ratios: (a) Acid-test ratio at 12/31/18 (b) Accounts receivable turnover in 2018 (c) Inventory turnover in 2018 (d) Profit margin on sales in 2018 (e) Return on common stock holders' equity in 2018 (f) Book value per share of common stock at 12/31/18