To find the percentage of mocha flavored cupcakes sold, you can use the formula:
\[ \text{Percentage} = \left( \frac{\text{Number of mocha cupcakes}}{\text{Total number of cupcakes}} \right) \times 100 \]
In this case:
- Number of mocha cupcakes = 57
- Total number of cupcakes = 300
Now, plug in the numbers:
\[ \text{Percentage} = \left( \frac{57}{300} \right) \times 100 \]
Calculating the fraction:
\[ \frac{57}{300} = 0.19 \]
Then, multiply by 100 to get the percentage:
\[ 0.19 \times 100 = 19 \]
Therefore, the percentage of cupcakes sold that day that were mocha flavored is 19%.