Question

John got all 20 questions on math test all were right plus an additional bonus question correctly. Bonus was worth same as other questions. What was the test score in percent?

Answer 1

The question on the math test is

$=20$

The bonus question is

$=1$

The total questions scored correctly

$\begin{gathered} =20+1 \\ =21 \end{gathered}$

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

$\text{test score(percent)=}\frac{\text{Total questions scored correctly}}{\text{Total questions on the math test}}\times100\text{ \%}$

By substituting the values, we will have

$\begin{gathered} \text{test score(percent)=}\frac{\text{Total questions scored correctly}}{\text{Total questions on the math test}}\times100\text{ \%} \\ \text{test score(percent)}=\frac{21}{20}\times100 \\ \text{test score(percent)}=\frac{2100}{20} \\ \text{test score(percent)}=105\text{ \%} \end{gathered}$

Hence,

The test score in percent = 105%