选择题
2013 AMC 8 Problem 7: Train Cars Passing
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?
2013年AMC 8 第7题 ：火车车厢通过
特雷和他的妈妈在一个铁路十字路口停下来，让火车通过。当火车开始通过时，特雷在前10秒内数了6节车厢。火车花了2分45秒才以恒定速度通过十字路口。以下哪项是列车上最有可能的车厢数量？
A.
60
B.
80
C.
100
D.
120
E.
140