How to solve You want to have $$36,754$ in $12$ years. You plan to invest $$9,000$ in $3$ years in investment A$,$ which has an expected return of $9\mathrm{.}60$ percent per year. You also plan to invest $X in $7$ years in investment B$,$ which has an expected return of $5\mathrm{.}07$ percent per year. What is X$?$