A man sells an article at a 20% profit. If he had bought it at 20% less than the original cost, what would be his profit percentage?
Q1. A man sells an article at a 20% profit. If he had bought it at 20% less than the original cost, what would be his profit percentage?
Answer: 50%
Explanation: Let's denote the original cost as 100. Selling price = 120. If he bought it at 20% less, the cost = 80. Profit = 120 - 80 = 40. Profit percentage = (40 / 80) * 100 = 50.