To find the percentage of students who passed the test, you can use the following formula:
\[ \text{Percentage} = \left( \frac{\text{Number of students who passed}}{\text{Total number of students}} \right) \times 100 \]
In this case, 18 students passed out of a total of 24 students. Plugging in these numbers:
\[ \text{Percentage} = \left( \frac{18}{24} \right) \times 100 \]
Now, calculate \( \frac{18}{24} \):
\[ \frac{18}{24} = 0.75 \]
Now multiply by 100:
\[ 0.75 \times 100 = 75 \]
Therefore, the percentage of students who passed the test is 75%.