A diner makes vanilla, milkshakes and chocolate milkshakes that the vanilla milkshake machine has a 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 milkshakes left, use X as your variable
1 answer
300 - 15X = 280 - 20X