To calculate the frequency of red flowers, you can use the formula:
\[ \text{Frequency} = \frac{\text{Number of individuals with the trait}}{\text{Total number of individuals}} \]
In this case:
- Number of red flowers = 30
- Total number of flowers = 40
So, the frequency of red flowers is:
\[ \text{Frequency} = \frac{30}{40} = 0.75 \]
Therefore, the frequency of red flowers is 0.75.