To find the unit rate of chocolate powder for every cup of milk in Mixture X, we need to multiply the amount of chocolate powder (4 tablespoons) by \(\frac{3}{1}\), which essentially helps us determine how much chocolate powder corresponds to each cup of milk.
Given:
- 3 cups of milk use 4 tablespoons of chocolate powder.
We want to find the amount of chocolate powder used per 1 cup of milk.
Since 3 cups of milk correspond to 4 tablespoons of chocolate powder, we can find the unit rate by dividing the number of tablespoons by the number of cups:
\[ \text{Unit rate (tablespoons per cup)} = \frac{4 \text{ tablespoons}}{3 \text{ cups}} = \frac{4}{3} \text{ tablespoons per cup} \]
So, the unit rate or the amount of chocolate powder per cup of milk is:
\[ \frac{4}{3} \text{ tablespoons of chocolate powder per cup of milk} \]