AMC 8 1987 Problem 24
AMC8 1987 年第 24 题
特殊数与不定方程★★★★☆
A multiple choice examination consists of 20 questions. The scoring is $+5$ for each correct answer, $-2$ for each incorrect answer, and 0 for each unanswered question. John's score on the examination is $48$. What is the maximum number of questions he could have answered correctly?
一项选择题考试包含 20 道题。评分规则为：每答对一题 $+5$ 分，每答错一题 $-2$ 分，未答题 0 分。John 的考试分数为 48。他最多可能答对了多少道题？
- A.9
- B.10
- C.11
- D.12
- E.16
正确答案 · Correct Answer
D
解析 · Solution
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