To find the unit rate for the mixture, we start by determining how many tablespoons of chocolate powder are used for 1 cup of milk.
We know that:
- 5 cups of milk are used for 10 tablespoons of chocolate powder.
To find the amount of chocolate powder per cup of milk, we can divide the total tablespoons of chocolate powder by the total cups of milk:
\[ \text{Tablespoons of chocolate powder per cup} = \frac{10 \text{ tablespoons}}{5 \text{ cups}} = 2 \text{ tablespoons per cup} \]
So, for 1 cup of milk, Mixture Y will use 2 tablespoons of chocolate powder.