AMC 8 2010 Problem 12
AMC8 2010 年第 12 题
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Of the 500 balls in a large bag, 80% are red and the rest are blue. How many of the red balls must be removed from the bag so that 75% of the remaining balls are red?
一个大包里的 500 个球中，有 80％是红球，其他是蓝球。需要从包中移走多少红球，使得包中剩下的球中，75％是红球？
- A.25
- B.50
- C.75
- D.100
- E.150
正确答案 · Correct Answer
D
解析 · Solution
解析整理中
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