1. **State the problem:** Keesha's breakfast contains 30 mg of vitamin C, and her daily amount is 75 mg. We want to find what percent of her daily amount she has at breakfast. 2. **Formula used:** To find the percentage, use the formula: $$\text{Percentage} = \frac{\text{Part}}{\text{Whole}} \times 100$$ where Part is the amount at breakfast and Whole is the daily amount. 3. **Apply the formula:** $$\text{Percentage} = \frac{30}{75} \times 100$$ 4. **Simplify the fraction:** $$\frac{30}{75} = \frac{\cancel{30}}{\cancel{75}} = \frac{2}{5}$$ 5. **Calculate the percentage:** $$\frac{2}{5} \times 100 = 40$$ 6. **Answer:** Keesha has 40% of her daily vitamin C amount at breakfast. --- **Next, find the amount of vitamin C in Keesha's breakfast when the daily amount is 5 mg, given the same percentage (40%).** 7. **Use the percentage to find the part:** $$\text{Part} = \frac{\text{Percentage}}{100} \times \text{Whole}$$ 8. **Calculate:** $$\text{Part} = \frac{40}{100} \times 5 = \frac{2}{5} \times 5$$ 9. **Simplify:** $$\frac{\cancel{2}}{5} \times \cancel{5} = 2$$ 10. **Answer:** The amount of vitamin C in Keesha's breakfast when the daily amount is 5 mg is 2 mg.