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A school plans to buy several computers. Now we know from two shopping malls that the price of each computer of the same model is 5000 yuan, and there is a certain discount for buying more computers, 1. Write down the relationship between the charges of the two shopping malls and the number of computers they buy. 2. What's more favorable to buy in shopping mall a? 3. What's more favorable to buy in shopping mall B? 4. What's the same charge in the two shopping malls? The original price is 5000 yuan
If you buy in a market, you need to charge x * 5000 + (x-1) * 5000 * (1-25%). If you buy in B market, you need to charge x * 5000 * (1-20%). 2. 4500X + 1500-4800 x = 1500-300x ＜ 0, you get x ＞ 5. When you buy more than 5 computers, you get a discount of 3. 4500X + 1500-4800 x ＞ 0, you get x ＜ 5
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