? A gift counter in a wholesale market bought a large number of New Year cards during the Spring Festival. 1 New Year card can sell 500 cards every day on average, and each card earns 0.3 yuan.
Let's reduce the price by x yuan. Then the sales volume is 500,200 (x/0.05) and the profit per page is 0.3-x, then (500,200 (x/0.05)) * (0.3-x) =180, and the solution is x1= 0./.
Hope to adopt.