AMC 8 1994 Problem 14
AMC8 1994 年第 14 题
比与比例★★★☆☆
Problem Two children at a time can play pairball. For 90 minutes, with only two children playing at time, five children take turns so that each one plays the same amount of time. The number of minutes each child plays is
双人壁球每次只能两名儿童同时玩。在 90 分钟内，只有两名儿童同时在玩，五名儿童轮流上场，使得每人玩的时间相同。每名儿童玩多少分钟？
- A.9
- B.10
- C.18
- D.20
- E.36
正确答案 · Correct Answer
E
解析 · Solution
解析整理中
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