Timmy Tappan is single and had $$192,000$ in taxable income. Using the rates from Table ${2\mathrm{.}3}_{?}$ in the chapter, calculate his income taxes. $"$

a$.$ What is the average tax rate? $($Do not round intermediate calculations and enter your answer as a percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$

b$.$ What is the marginal tax rate? $($Do not round intermediate calculations and enter your answer as a percent rounded to the nearest whole number, e$.$g$.,32.)$

$\backslash$table$[[$a$.$ Average tax rate,,$\%$