There are 28 students in a class. 21 of those students are boys. What percent are girls?
[(28 - 21) / 28] * 100% = ?
To find the percentage of girls in the class, we first need to determine the number of girls in the class.
We know that there are a total of 28 students in the class and 21 of them are boys. Therefore, we can subtract the number of boys from the total number of students to get the number of girls.
Number of girls = Total number of students - Number of boys = 28 - 21 = 7
Now that we know there are 7 girls in the class, we can calculate the percentage of girls by dividing the number of girls by the total number of students and multiplying by 100.
Percentage of girls = (Number of girls / Total number of students) x 100 = (7 / 28) x 100 = 25%
Therefore, 25% of the students in the class are girls.