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题目来源：
OG详解-OG4 数学1 Q2
正确答案：A
题目详解
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Choice A is correct. Let x represent the percentage of 300 that is 75. This can be written as x100 (300)= 75, or 3x = 75. Dividing both sides of this equation by 3 yields x = 25. Therefore, 25% of 300 is 75.
Choice B is incorrect. 50% of 300 is 150, not 75. Choice C is incorrect. 75% of 300 is 225, not 75. Choice D is incorrect. 225% of 300 is 675, not 75.
Choice B is incorrect. 50% of 300 is 150, not 75. Choice C is incorrect. 75% of 300 is 225, not 75. Choice D is incorrect. 225% of 300 is 675, not 75.
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