Question

The basketball team at Martin Luther King High School won 12 of its first 15 games. Then it won its next 3 games. The percent of winning games was

Answer 1

12/15 games have been won then they won 3 which makes it then 15/18 because the denominator is how many games they've played while the numerator is how many games they one.

$\frac{15}{18} = \frac{x}{100}$
Cross multiply both...
$1500=18x$
divide each side by 18 to make the x by itself
Which gives you x=83.333%