# A student answered three questions on a 40-question test incorrectly. What percent did they answer correctly?

$\frac{3}{40}$ is equal to $\frac{30}{400}$ which equals $\frac{7.5}{100}$
Another way to do this is $\frac{3}{40}$ is equal to $\frac{0.75}{10}$ which equals $\frac{7.5}{100}$