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 8.0,
(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?