In a class, 12 students like to play volleyball. If 30% of the students in the class like to play volleyball, how many students are in the class?
To determine the total number of students in the class, we can use the information provided. We know that 30% of the students in the class like to play volleyball, and this percentage is equivalent to 12 students.
To find the total number of students, we can set up a proportion:
30% = 12 students
100% = ?
To solve for the missing value, cross-multiply:
30% * ? = 12 students * 100%
Simplifying the equation, we find:
0.3 * ? = 12
Dividing both sides of the equation by 0.3, we get:
? = 12 / 0.3 = 40
Therefore, there are 40 students in the class.
To find out how many students are in the class, we can use a proportion.
Let's denote the number of students in the class as "x". We know that 30% of the students in the class like to play volleyball, which means that 12 is 30% of x.
To solve this proportion, we can set up the equation:
30/100 = 12/x
To make it easier to solve, we can cross-multiply:
30x = 12 * 100
Now, we can solve for x by dividing both sides of the equation by 30:
x = (12 * 100) / 30
x = 40
Therefore, there are 40 students in the class.
.3x = 12
Solve for x.