if 15's student said in a survey that pizza was their favorite food how many students are in the entire class if it was 3/5 of the class?
(3/5)x = 15
x = 15 / (3/5)
To find the total number of students in the entire class, we can use proportions.
Let's assume that x represents the total number of students in the class.
According to the survey, 3/5 of the class said that pizza was their favorite food. So, if x represents the total number of students in the class, we can express this as:
(3/5) * x = 15
To solve for x, we can multiply both sides of the equation by 5/3 (the reciprocal of 3/5):
[(3/5) * x] * (5/3) = 15 * (5/3)
On simplifying, the equation becomes:
x = 15 * (5/3)
Now, we can calculate the value of x:
x = 25
Therefore, there are 25 students in the entire class.