1. **State the problem:** Andrea left a 25% tip of 2.00 on her tacos. We need to find the original price of the tacos before the tip. 2. **Formula and explanation:** The tip is calculated as a percentage of the original price. If $P$ is the original price, then the tip amount is given by: $$\text{Tip} = P \times \frac{\text{tip percentage}}{100}$$ Here, the tip percentage is 25%, so: $$2.00 = P \times \frac{25}{100}$$ 3. **Solve for $P$:** $$2.00 = P \times 0.25$$ Divide both sides by 0.25: $$P = \frac{2.00}{0.25}$$ 4. **Calculate:** $$P = 8.00$$ 5. **Interpretation:** The original price of Andrea's tacos before the tip was 8.00.