Write a real world problem usinng mixed numbers whose sum is 1 3/5

To make an orange juice, it needs a certain amount of water and a certain amount of orange concentrate. base from the instructions of the manufacturer of the orange concentrate, it needs 1 L of water and 3/5 L of orange concentrate to make a delicious orange juice. what is the total volume of the jiuce made?

Your answer should be 1/3. i hope i could ! good luck : )