Market research shows that when the selling price is 2900 yuan, an average of 8 refrigerators can be sold every day; when the selling price is reduced by 50 yuan, an average of 4 more refrigerators can be sold every day; how many yuan should the selling price be reduced to make the average profit of this refrigerator reach 5000 yuan every day?

Suppose that the price of each refrigerator should be x yuan. According to the meaning of the question, we get (x-2500) (8 + 2900 − X50 × 4) = 5000. Solving the equation, we get X1 = x2 = 2750. After testing, X1 = x2 = 2750 meets the meaning of the question. Answer: the price of each refrigerator should be 2750 yuan

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1. A supermarket sells a batch of refrigerators with a purchase price of 2500 yuan. When the sales price is set at 3500 yuan, an average of 8 refrigerators are sold every day, and for every 100 yuan reduction in the sales unit price of refrigerators, an average of 2 more refrigerators are sold every day. In order to sell more refrigerators and increase the daily profit by 1000 yuan, what is the daily preferential price?
2. There are two kinds of refrigerators in Xinhua shopping mall. The purchase price of a refrigerator is 2500 yuan. Market research shows that when the sales price is 2900 yuan, it can sell 8 refrigerators per day on average There are two kinds of refrigerators in Xinhua shopping mall. The purchase price of type a refrigerators is 2500 yuan. Market research shows that when the sales price is 2900 yuan, 8 refrigerators can be sold every day on average. When the sales price is reduced by 50 yuan, 4 refrigerators can be sold every day on average. The purchase price of type B refrigerators is 2000 yuan. Market research shows that when the sales price is 2500 yuan, 8 refrigerators can be sold every day on average When the price is reduced by 45 yuan, an average of 4 more refrigerators are sold every day. If the market wants to make the average profit of the two refrigerators reach 5000 yuan every day, what are the prices of the two refrigerators? It's due tomorrow!
3. Market research shows that when the selling price is 2900 yuan, an average of 8 refrigerators can be sold every day; when the selling price is reduced by 50 yuan, an average of 4 more refrigerators can be sold every day; how many yuan should the selling price be reduced to make the average profit of this refrigerator reach 5000 yuan every day?
4. Xinhua shopping mall sells some refrigerators at a price of 2500 yuan per unit. Market research shows that when the selling price is set at 2900 yuan, an average of 8 refrigerators are sold every day, but they are not sold in the market
5. A supermarket sells 2000 yuan refrigerators at 2400 yuan, an average of 8 refrigerators per day. In order to cooperate with the implementation of the national policy of "home appliances to the countryside", the supermarket The survey shows that if the price of this kind of refrigerator is reduced by 50 yuan, 4 more refrigerators will be sold every day. (1) suppose that the price of each refrigerator is reduced by X Yuan, and the profit of this kind of refrigerator is y yuan every day. Please write the function expression between Y and X; (it is not required to write the value range of the independent variable.) (2) In order to make a profit of 4800 yuan per day in the sales price of this kind of refrigerator, and at the same time make the people get benefits, how much should each refrigerator be reduced? Ask for a way to do this,
6. A supermarket sells a refrigerator with a purchase price of 2000 yuan at 2400 yuan, with an average of 8 refrigerators sold every day. The survey shows that every 50 yuan reduction in the price of this refrigerator will result in an average of 8 refrigerators
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12. Market research shows that when the selling price is 2900 yuan, an average of 8 refrigerators can be sold every day; when the selling price is reduced by 50 yuan, an average of 4 more refrigerators can be sold every day; how many yuan should the selling price be reduced to make the average profit of this refrigerator reach 5000 yuan every day?
13. Market research shows that when the selling price is 2900 yuan, an average of 8 refrigerators can be sold every day; when the selling price is reduced by 50 yuan, an average of 4 more refrigerators can be sold every day; how many yuan should the selling price be reduced to make the average profit of this refrigerator reach 5000 yuan every day?
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