AMC 8 2013 Problem 7
AMC8 2013 年第 7 题
比与比例★★☆☆☆
Trey and his mom stopped at a railroad crossing to let a train pass. As the train began to pass, Trey counted 6 cars in the first 10 seconds. It took the train 2 minutes and 45 seconds to clear the crossing at a constant speed. Which of the following was the most likely number of cars in the train?
和他妈妈为了让一辆火车通过，在铁路的交叉口停了下来。当火车开始通过时，在前 10 秒他们数到了 6 节车厢。火车以恒定的速度完全通过这个交叉口耗时 2 分钟 45 秒，那么这列火车最有可能有多少节车厢？
- A.60
- B.80
- C.100
- D.120
- E.140
正确答案 · Correct Answer
C
解析 · Solution
解析整理中
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