Carter and his friends are setting up a lemonade stand in their neighborhood. Their recipe makes 5 cups of lemonade, and calls for 1.5 cups of lemon juice. How many cups of lemon juice are needed to make 2 gallons of lemonade? Round your answer to the nearest tenth if necessary.
Each cup of lemonade requires 1.5/5 = 0.3 cups of lemon juice. There are 16 cups in a gallon, so 32 cups in 2 gallons. The amount of lemon juice required is ...