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(3/5)x = 15
x = 15 / (3/5)
x = 15 / (3/5)
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.