6 Problem 3-25 Tax Rates (LO4) Use Table 3.6. (Do not round intermediate calculations. Enter the average tax rate as a percent rounded to 1 decimal place.) 9.09 points Skipped a. What would be the marginal tax rate for a married couple with income of $90,300? b. What would be the average tax rate for a married couple with income of $90,300? c. What would be the marginal tax rate for an unmarried taxpayer with income of $90,300? d. What would be the average tax rate for an unmarried taxpayer with income of $90,300? eBook Print a. % References b. % Marginal tax rate for a married couple Average tax rate for a married couple Marginal tax rate for an unmarried taxpayer Average tax rate for an unmarried taxpayer C. % d. %