Final answer:
To find the percent of the class that turned in their homework on time, divide the number of students who turned it in on time by the total number of students and multiply by 100.
Step-by-step explanation:
To find the percent of the class that turned in their homework on time, you divide the number of students who turned in their homework on time (18) by the total number of students in the class (22). Then, multiply the result by 100 to get the percentage.
In this case, 18 divided by 22 is 0.8182. Multiply that by 100 to get 81.82 percent.
Therefore, approximately 81.82% of the class turned in their homework on time.