1. **Problem 7:** Roger bought 300 shares for $15,000. He sold half (which is 150 shares) for $18,000. Find the gross capital gain on those shares. 2. Calculate the original cost price per share: $$\frac{15000}{300} = 50\; \text{per share}$$ 3. Cost price of 150 shares sold: $$150 \times 50 = 7500$$ 4. Selling price of 150 shares: $$18000$$ 5. Gross capital gain = Selling price - Cost price: $$18000 - 7500 = 10500$$ 6. **Problem 8:** Cassidy bought shares for $3,222 and sold for $4,120. Find the capital gain percent. 7. Capital gain: $$4120 - 3222 = 898$$ 8. Capital gain as a percent of original price: $$\frac{898}{3222} \times 100 \approx 27.9\%$$ **Final Answers:** 7. Roger's gross capital gain is $10,500. 8. Cassidy's capital gain percentage is approximately 27.9%.