Q76. - Algebra 1

Question

Aaron correctly answered 27 out of 30 questions on his last biology test. What percent of the questions did he answer correctly?

Step-by-Step Solution

Answer

The percent of the questions did he answer correctly is $\mathbf{90}\mathbf{\%}$.

Step 1 – Given information.

Total questions = 30

Correct answers = 27

Step 2 – Write the concept.

The formula of percentage is given by:

$\text{Percentage}=\frac{\text{Parts}}{\text{Whole\hspace{0.17em}\hspace{0.17em}value}}\times \text{100\%}$

Step 3 – Determine the %.

The % value is:

$\begin{array}{c}\text{Percentage}=\frac{\text{Parts}}{\text{Whole\hspace{0.17em}\hspace{0.17em}value}}\times \text{100\%}\\ =\frac{27}{30}\times 100\%\\ =\frac{9}{10}\times 100\%\\ =9\times 10\%\\ =90\%\end{array}$