1. **State the problem:** A man bought a shirt for 50 and sold it for 65. We need to find the percentage profit. 2. **Identify the cost price (CP) and selling price (SP):** - Cost Price, $CP = 50$ - Selling Price, $SP = 65$ 3. **Calculate the profit:** $$\text{Profit} = SP - CP = 65 - 50 = 15$$ 4. **Calculate the percentage profit:** $$\text{Percentage Profit} = \left(\frac{\text{Profit}}{CP}\right) \times 100 = \left(\frac{15}{50}\right) \times 100 = 30\%$$ 5. **Final answer:** The man's percentage profit is **30%**.