north/south airlines generated the following information from its financial statements: (1) P/E ratio equals 15.0, (2) common stock market price per share is $30, (3) fixed assets turnover equals 3.0, (4) current ratio equals 5.0, (5) current liabilities equal $300,000, (6) net profit margin equals 4 percent, and (7) 60,000 shares of common stock are outstanding. What are north/south's (a) return on assets (ROA) and (b) total assets turnover?