There are 560 students at a middle school. Of those students, 112 wear glasses or contact lenses.

Question

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%.