Chuck, a single taxpayer, earns $82,000 in taxable income and $17,750 in interest from an investment in City of Heflin bonds. (Use the U.S. tax rate schedule) Required a. If Chuck earns an additional $48,250 of taxable income, what is his marginal tax rate on this income? b. What is his marginal rate if, instead, he had $48,250 of additional deductions? For all requirements, do not round intermediate calculations. Round your answers to 2 decimal places.) Answer is complete but not entirely correct. Marginal tax rate Marginal tax rate 27,46 % 24.23 %