AMC 8 2017 Problem 14

AMC8 2017 年第 14

百分比★★★☆☆
Chloe and Zoe are both students in Ms. Demeanor's math class. Last night, they each solved half of the problems in their homework assignment alone and then solved the other half together. Chloe had correct answers to only 80% of the problems she solved alone, but overall 88% of her answers were correct. Zoe had correct answers to 90% of the problems she solved alone. What was Zoe's overall percentage of correct answers?
和 Zoe 都是 Demeanor 女士数学课上的学生。昨晚她俩各自解决了家庭作业上一半的题目,接着共同解决了剩下的一半。Chloe 自己单独解决的题目里,正确率是 80%,但算上共同完成的题目,总的来说,她的正确率是 88%.Zoe 自已单独解决的题目里,正确率是 90%,问总的来说,Zoe 的正确率是多少?
  1. A.89
  2. B.92
  3. C.93
  4. D.96
  5. E.98

正确答案 · Correct Answer

C

解析 · Solution

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