You own $2$ investments, A and B$,$ which are expected to be worth a combined total value of $$144,689$ in $12$ years. You plan to invest $$23,900$ in $2$ years in investment A$,$ which has an expected return of $18\mathrm{.}24$ percent per year. You also plan to invest $$9,500$ in $6$ years in investment B$,$ which has an expected return of X percent per year. What is X$?$

Input instructions: Enter the number, rounded to $2$ decimal places, that comes before the percent sign. For example, if the answer is $12\mathrm{.}34$ percent, enter $12\mathrm{.}34.$ Do not enter $0\mathrm{.}1234$ or $12\mathrm{.}34\%.$