A shopping mall bought a batch of clothes at a certain purchase price and sold them at a certain unit price. On average, it sold 10 pieces a day and made a total profit of 15000 yuan in 30 days. Now, in order to recover the funds as soon as possible, the shopping mall decided to sell each piece of clothes at a 20% price reduction. As a result, it sold 10 pieces more every day than before the price reduction. In this way, it could make a profit of 12000 yuan in 30 days Less?

A shopping mall bought a batch of clothes at a certain purchase price and sold them at a certain unit price. On average, it sold 10 pieces a day and made a total profit of 15000 yuan in 30 days. Now, in order to recover the funds as soon as possible, the shopping mall decided to sell each piece of clothes at a 20% price reduction. As a result, it sold 10 pieces more every day than before the price reduction. In this way, it could make a profit of 12000 yuan in 30 days Less?

Suppose the purchase price of each piece is x and the price before the price reduction is y. from the Title Meaning: 10 × 30 × (Y − x) = 1500000 × 30 × (80% Y − x) = 12000, the solution is: x = 100y = 150. Answer: the purchase price of each piece of this batch of clothes is 100 yuan and the price before the price reduction is 150 yuan