The document contains a pie chart showing the percentage of students enrolled in different hobby classes at a school with a total student population of 3600. It then provides 5 questions and solutions related to calculating percentages and numbers of students enrolled in different classes based on the data in the pie chart. The questions include calculating percentages of students in one class compared to another, determining the number of students enrolled in a specific class, finding percentages of one class compared to another, determining ratios of enrollment between classes, and calculating total enrollment between two classes.