The Wall Street Journal reports that the current rate on $10-$year Treasury bonds is $8\mathrm{.}20$ percent, on $20-$year Treasury bonds is $8\mathrm{.}80$ percent, and on a $20-$year corporate bond issued by MHM Corp. is $10\mathrm{.}65$ percent. Assume that the maturity risk premium is zero. If the default risk premium and liquidity risk premium on a $10-$year corporate bond issued by MHM Corp. are the same as those on the $20-$year corporate bond, calculate the current rate on MHM Corp.$$s $10-$year corporate bond. $($Round your answer to $2$ decimal places.$)$