## Elementary Algebra

$66\%$
$6\%$ of the rentals were sailboats. $28\%$ of the rentals were ski boats. To find the percentage that were either ski boats or sailboats, we simply add these two percents. $6\%+28\%=34\%$. To find the percent that are not sail boats or ski boats, we must subtract the percentage that are sail boats or ski boats from the whole, which is $100\%$. $100\%-34\%=66\%$