Suppose we observe the following rates: $1R_1=6\mathrm{.}7\%,1R_2=7\mathrm{.}9\%.$ If the unbiased expectations theory of the term structure of interest rates holds, what is the one$-$year interest rate expected one year from now, $E(2r_1)?$

Note: Do not round intermediate calculations. Round your percentage answer to $2$ decimal places $($e$.$g$.,32\mathrm{.}16).$

Expected one$-$year interest rate