Keller Cosmetics maintains an operating profit margin of 5% and asset turnover ratio of 3. a. What is its ROA? (Use the Do pont system)(Enter your answer as a whole percent.) b. If its leverage ratio (assets to equity ratio) is 2, tax burden is 0.6, what is its ROE? (Use the Do Pont system)(Do not round intermediate calculations. Enter your answer as a whole percent.)