Stephanie works 30 hours a week at a wage rate of $15. Thus, her total weekly income is $450. On this income, she pays total taxes of $27.00. However, she calculates that on the last hour that she works, she pays $1.50. Stephanie's average tax rate is enter your response here%. (Round your response to two decimal places.) Part 2 Stephanie's marginal tax rate is enter your response here%. (Round your response to two decimal places.)