Answer:
To find out how many cups of popcorn are needed to feed a certain number of students, we can use a proportion.
In this case, we know that 60 cups of popcorn feed 15 students.
Let's set up the proportion:
60 cups of popcorn / 15 students = X cups of popcorn / Y students
To find out how many cups of popcorn are needed to feed a certain number of students, we need to determine the value of X.
To solve the proportion, we can use cross multiplication. Cross multiplying means multiplying the numerator of the first fraction by the denominator of the second fraction, and vice versa.
(60 cups of popcorn) * (Y students) = (15 students) * (X cups of popcorn)
Now, we can solve for X:
60Y = 15X
To isolate X, we divide both sides of the equation by 15:
X = (60Y) / 15
Simplifying the equation, we get:
X = 4Y
Therefore, the number of cups of popcorn needed to feed a certain number of students is 4 times the number of students.
Explanation: