Final answer:
By dividing the number of students who prefer chocolate milk (16) by the percentage that represents (0.4), we find that there are 40 students attending the school event.
Step-by-step explanation:
The question is asking us to calculate the total number of students attending the school event based on the information provided about chocolate milk preference.
Since 40% of the students preferred chocolate milk and the cafeteria ordered enough chocolate milk for 16 students, we can set up an equation to find the total number of students. Let the total number of students be x. We then have the following equation:
0.4x = 16
To find x, we divide both sides of the equation by 0.4:
x = 16 / 0.4
x = 40
Therefore, there are 40 students attending the school event.