Question

There are 560 students at a middle school. Of those students, 112 wear glasses or contact lenses.
What percentage of the middle school students wear glasses or contact lenses?


? = 15%

? = 25%

? = 5%

? = 20%

Answer 1

To find the percentage of middle school students who wear glasses or contact lenses, you can use the following formula:

\[
\text{Percentage} = \left(\frac{\text{Number of students wearing glasses/contact lenses}}{\text{Total number of students}}\right) \times 100
\]

In this case:

- Number of students wearing glasses/contact lenses = 112
- Total number of students = 560

Now substitute the values into the formula:

\[
\text{Percentage} = \left(\frac{112}{560}\right) \times 100
\]

Calculating the fraction:

\[
\frac{112}{560} = 0.2
\]

Now, multiply by 100 to get the percentage:

\[
0.2 \times 100 = 20
\]

So, the percentage of the middle school students who wear glasses or contact lenses is **20%**.

The correct answer is: **? = 20%**.