Martinez Design Works generated $347,760 in operating income on sales revenue of $2,484,000. The company had $1,760,000 in assets on January 1 and $2,840,000 in assets on December 31. (a-b) (a) Calculate Martinez's margin. (Round answer to O decimal places, e.g. 65%.) Martinez's margin % (b) Calculate Martinez's asset turnover. (Round answer to 2 decimal places, e.g. 0.65.) Martinez's asset turnover eTextbook and Media Save for Later times (c) Calculate Martinez's return on investment. (Round answer to 2 decimal places, e.g. 5.12%.) Martinez's return on investment eTextbook and Media Save for Later % Attempts: 0 of 3 used Submit Answer Attempts: 0 of 3 used Submit Answer