Assume the total cost of a college education will be $$410,000$ when your

child enters college in $15$ years. You presently have $$68,000$ to invest.

What annual rate of interest must you earn on your investment to cover the

cost of your child's college education?

Note: Do not round intermediate calculations and enter your answer as

a percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.$

Annual rate

$\%$