Solve for the unknown interest rate in each of the following: $($Do not round intermediate calculations. Enter your answers as a percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$Solve for the unknown interest rate in each of the following: $($Do not round intermediate

calculations. Enter your answers as a percent rounded to $2$ decimal places, e$.$g$.,$

$32\mathrm{.}16.)$