Using Table 3.6, calculate the marginal and average tax rates for a single taxpayer with the following incomes: (Do not round intermediate calculations. Round your answers to 1 decimal place.) Income Marginal Tax Rate Average Tax Rate a. $ 25,000 %: % $ 60,000 % % C. $ 310,000 % % d. $ 4,000,000 % % TABLE 3.6 Personal tax rates, 2018 Taxable Income ($) Single Taxpayers Married Taxpayers Filing Joint Returns Tax Rate (%) $0-$9,525 $0-$19,050 10 $9,526-$38,700 $38,701-$82,500 $82,501-$157,500 $157,501-$200,000 $19,051-$77,400 12 $77,401-$165,000 22 $165,001-$315,000 24 $315,001-$400,000 32 $200,001-$500,000 $400,001-$600,000 35 $500,001 and above $600,001 and above 37