Campbell, a single taxpayer, earns $405,500 in taxable income and $2,440 in interest from an investment in State of New York bonds. (Use the U.S. tax rate schedule).

Required:

1. If Campbell earns an additional $16,100 of taxable income, what is her marginal tax rate on this income?
2. What is her marginal rate if, instead, she had $16,100 of additional deductions?

(For all requirements, do not round intermediate calculations. Round percentage answers to whole percent.)

a. Marginal tax rate%

b Marginal tax rate%