1. **Stating the problem:** Solve question 2 related to sales, cost, markup, markdown, or profit/loss calculations involving percentages. 2. **Identify the problem:** Since the user did not specify the exact question 2, we assume it involves calculating either markup, markdown, profit, or loss using given percentages. 3. **Formula for markup percentage:** $$\text{Markup \%} = \frac{\text{Selling Price} - \text{Cost Price}}{\text{Cost Price}} \times 100$$ 4. **Formula for markdown percentage:** $$\text{Markdown \%} = \frac{\text{Original Price} - \text{Selling Price}}{\text{Original Price}} \times 100$$ 5. **Formula for profit or loss percentage:** $$\text{Profit or Loss \%} = \frac{\text{Profit or Loss}}{\text{Cost Price}} \times 100$$ 6. **Example calculation:** Suppose question 2 asks: "If the cost price is 125 and the selling price is 150, find the markup percentage." 7. Calculate markup: $$\text{Markup} = 150 - 125 = 25$$ 8. Calculate markup percentage: $$\text{Markup \%} = \frac{25}{125} \times 100 = 20\%$$ 9. **Answer:** The markup percentage is 20%.