Rappaport Corp.'s sales last year were $340,000, and its net income after taxes was $23,000. What was its profit margin on sales?

Branch Corp.'s total assets at the end of last year were $215,000 and its net income after taxes was $22,750. What was its return on total assets?

Vang Corp.'s stock price at the end of last year was $32 and its earnings per share for the year were $2.30. What was its P/E ratio?

Northwest Lumber had a profit margin of 10%, a total assets turnover of 1.5, and an equity multiplier of 1.8. What was the firm's ROE?

Last year Vaughn Corp. had sales of $315,000 and a net income of $17,832, and its year-end assets were $210,000. The firm's total-debt-to-total-assets ratio was 12.5%. Based on the DuPont equation, what was Vaughn's ROE?