roak company clay company current yr 1 yr ago 2 yrs ago current yr 1 yr ago 2 yrs ago total asset turnover 4.5 4.2 4.4 2.9 2.9 2.5 return on total assets 11.0% 12.4% 13.0% 7.9% 7.6% 7.3% profit margin ratio 3.8% 3.9% 3.7% 5.6% 5.8% 5.7% sales $480,000 $450,000 $466,000 $280,000 $240,000 $180,000 1. (a) which company has the better profit margin? (b) which has the better asset turnover? (c) which has the better return on assets? 2. which company has the better rate of growth in sales? 3. (a) did roak successfully use financial leverage in the current year? (b) did clay?