Stephanie works 40 hours a week at a wage rate of ​$25. ​ This, her total weekly income is ​$1000. On this​ income, she pays total taxes of ​$80.00. ​ However, she calculates that on the last hour that she​ works, she pays ​$6.25. Stephanie​'s average tax rate is nothing​%.​ (Round your response to two decimal​ places.) Stephanie​'s marginal tax rate is nothing​%. ​(Round your response to two decimal​ places.)