1.4. a. Using the profit-and-loss statement below, Assuming the company's beginning inventory was $15 million, ending inventory was $6 million, and total investment was $30 million including inventory, determine the following: gross margin percentage b. net profit percentage c. operating expense percentage d. inventory turnover rate e. return on investment (ROI) f. net marketing contribution g. marketing return on sales (marketing ROS) h. marketing return on investment (marketing ROI) i. Is the company doing well? Explain your answer. Sales Cost of goods sold $50,000,000 22,500,000 Gross Margin $27,500,000 Marketing Expenses Sales expenses $7,000,000 Promotion expenses 2,000,000 Freight 2,500,000 11,500,000 General and Administrative Expenses Managerial salaries and expenses $500,000 Indirect overhead 2,000,000 2,500,000 Net profit before income tax $13,500,000