A diner makes vanilla milkshakes and chocolate milkshakes. The vanilla milkshake machine has a

Question

300-cup capacity, and sells 15 cups per day. The chocolate milkshake machine has a 280-cup capacity, and sells 20 cups per day. Write an equation to show when the two machines will have the same amount of milkshake left. Use X as your variable. (1 point)

Answer 1

Let X represent the number of days.

For the vanilla milkshake machine, the equation is: 300 - 15X
300 represents the initial capacity of the machine, and 15X represents the number of cups sold per day.

For the chocolate milkshake machine, the equation is: 280 - 20X
280 represents the initial capacity of the machine, and 20X represents the number of cups sold per day.

To show when the two machines will have the same amount of milkshake left, we set the two equations equal to each other:

300 - 15X = 280 - 20X