The question on the math test is
[tex]=20[/tex]The bonus question is
[tex]=1[/tex]The total questions scored correctly
[tex]\begin{gathered} =20+1 \\ =21 \end{gathered}[/tex]To calculate the test score in percent, we will use the formula below
Since she got all the questions plus the bonus question correctly( note: all questions worth the same points), then we will have
[tex]\text{test score(percent)=}\frac{\text{Total questions scored correctly}}{\text{Total questions on the math test}}\times100\text{ \%}[/tex]By substituting the values, we will have
[tex]\begin{gathered} \text{test score(percent)=}\frac{\text{Total questions scored correctly}}{\text{Total questions on the math test}}\times100\text{ \%} \\ \text{test score(percent)}=\frac{21}{20}\times100 \\ \text{test score(percent)}=\frac{2100}{20} \\ \text{test score(percent)}=105\text{ \%} \end{gathered}[/tex]Hence,
The test score in percent = 105%
