To calculate the percentage of bad apples, Vincenzo can use the following formula:
\[ \text{Percentage of bad apples} = \left( \frac{\text{Number of bad apples}}{\text{Total number of apples}} \right) \times 100 \]
In Vincenzo's case:
- Number of bad apples = 4
- Total number of apples = 34
Plugging in the numbers:
\[ \text{Percentage of bad apples} = \left( \frac{4}{34} \right) \times 100 \]
Now, performing the calculation:
- \( \frac{4}{34} \approx 0.1176 \)
- \( 0.1176 \times 100 \approx 11.76 \)
So, the percentage of apples that were bad is approximately 11.76%.