Su Lee's has sales of $54,600, total assets of $56,100, and a profit margin of 4 percent. The firm has a total debt ratio of 30 percent. What is the return on equity? 5.39 percent 5.42 percent 5.48 percent C 556 percent O6.31 percent Martin's Method Acting School has a current ratio of 2, a quick ratio of 1.8, net income of $180,000, a profit margin of 10%, and an accounts receivable balance of $150,000, what is the firm's approximate average collection period? 50 days 43 days 30 days 24 days 16 days Little's Inc. provides a 10% return on equity. Sales are $100,000 on total assets of $140,000 and total equity of $85,000. What is the profit margin? 6.07% 8.50% 10.00% 11 ,77% 14.00%