17. Hower Co. had sales of $10,000,000, a gross margin of $4,000,000, an operating income of $1,500,000, and net income of $1,000,000. Total assets were $20,000,000, and shareholders' equity was $5,000,000. There were 2,000,000 shares in issue. Required Calculate the following: (a) Gross margin as \% of sales (b) Operating income as % of sales (c) Operating income as % of total assets (d) Return on shareholders' equity (e) Earnings per share