A shopkeeper bought a chair with a marked price of ₹800 after two successive discounts of 10% and 15%. He incurred ₹28 in carrying costs and sold it for ₹800. What is his profit percentage?

Explanation

1. Discounted Price = ₹800 × 0.90 × 0.85 = ₹612.
2. Total Cost = ₹612 + ₹28 = ₹640.
3. Selling Price = ₹800.
4. Profit = ₹800 - ₹640 = ₹160.
5. Profit percentage = (₹160 ÷ ₹640) × 100 = 25%.