The original price of a kind of TV set is 2500 yuan, and the sales promotion in the market is 1 / 5. After the activity, the price is increased by 1 / 5. How much is the current price of this kind of TV set?

The original price of a kind of TV set is 2500 yuan, and the sales promotion in the market is 1 / 5. After the activity, the price is increased by 1 / 5. How much is the current price of this kind of TV set?

The promotion price is 2500 * (1-1 / 5) = 2000. If you do this math problem in school, it will be understood as the basis of the promotion price after the end of the activity. The price increase is 1 / 5:2000 * (1 + 1 / 5) = 2400. But the merchant is not so stupid: when selling at the original price, the cost has been considered. The promotion price should consider both the cost and profit, as well as the sales volume. In the same way, the price increase is also considered, Then he must take the original price as the benchmark to consider promotion or price increase. 3000 yuan