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

$\backslash$table$[[$Present Value,Years,Interest Rate,Future Value$],[$$$,260,3,\%,307],[,380,17,\%,1,107],[,41,000,18,\%,185,586],[,40,261,20,\%,342,595]]$