John uses 1 2 3 cups of milk to make a sauce recipe, and then uses 2 1 4 cups of milk to make a cake recipe. How much milk did he use in total to make the two recipes?

3.91

Step-by-step explanation:

It is given that,

John uses cups of milk to make a sauce recipe, and then uses cups of milk to make a cake recipe.

We need to find how much milk did he use in total to make the two recipes. It can be calculated by simply adding   cups of milk and   cups of milk. So,

So, she will need 3.91 units of milk to make the two recipes.