The formula to calculate the percentage of a specific flour in a mixture is:
\[ P = \left( \frac{W_s}{W_t} \right) \times 100 \]
Where:
Let's say the weight of the specific flour (Ws) is 200 grams and the total weight of all flours (Wt) is 500 grams. Using the formula:
\[ P = \left( \frac{200}{500} \right) \times 100 = 40 \]
So, the percentage of the specific flour in the mixture is 40%.