Q28. - Algebra 1

Question

DRIVER'S ED Kara needs to get a 75% on her driving education test in order to get her license. If there are 35 questions on the test, how many does she need to answer correctly?

Step-by-Step Solution

Answer

The number of correct answers is 27.

Step 1. Given information.

Kara to get her driving license needs to score 75%. There are 35 questions in the driving education test.

Step 2. Definition of percentage.

A percentage is a ratio that can be expressed as a fraction of 100. 

Step 3. Assumptions and apply the definition of percentage

A percentage is a ratio that can be expressed as a fraction of 100. 

$\frac{x}{35}=\frac{75}{100}$

Step 3. Calculations.

$$\begin{gathered} \frac{x}{35}=\frac{75}{100} \\ x=\frac{75\times 35}{100} \\ x=26.25 \end{gathered}$$

Hence, the number of correct answers is 27.