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When 80% of the color TV sets are sold, the rest will be sold at a 20% discount. What's the actual profit of this batch of color TV sets? 2. After 75% of the total number of peaches sold in a supermarket during the May Day holiday, another 120 kg of peaches were transported. At this time, the total number of peaches increased by 5% compared with the original? 3. Xinglong shopping mall adopts the method of "get 50 free of 300" to promote sales. It is stipulated that if the purchase is over 300 yuan, 50 yuan gift certificate will be given, and the part less than 300 yuan will be omitted. The gift certificate can replace cash in the next shopping, but the part using the gift certificate can not enjoy the discount of "get 50 free of 300 yuan" A customer first bought a product with 1000 yuan, and then bought B product with these gift certificates and 280 yuan in cash. Q: how much discount does this customer enjoy when buying a and B products?
The solution is as follows: 1. When a store enters a batch of color TV sets, it will price them according to 20% of the profit. When 80% of the color TV sets are sold, the rest will be sold according to 20% of the price. What is the actual profit percentage of this batch of color TV sets? (this question is about the understanding of percentage and the practical application of percentage. It is about the corresponding percentage ratio
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