Keller Cosmetics maintains an operating profit margin of 8% and a sales-to-assets ratio of 3. It has assets of $500,000 and equity of $300,000. Assume that interest payments are $30,000 and the tax rate is 25%. a. What is the return on assets? (Enter your answer as a percent rounded to 2 decimal places.) Return on assets % b. What is the return on equity? (Enter your answer as a percent rounded to 2 decimal places.) Return on equity