AMC 8 2009 Problem 3
AMC8 2009 年第 3 题
行程问题★☆☆☆☆
The graph shows the constant rate at which Suzanna rides her bike. If she rides a total of a half an hour at the same speed, how many miles would she have ridden?
下图显示了 Suzanna 以恒定的速度骑自行车。如果她以同样的速度骑了半个小时，她将骑多少英里？
- A.5
- B.5.5
- C.6
- D.6.5
- E.7
正确答案 · Correct Answer
C
解析 · Solution
Solution 1
Suzanna's speed is . This means she runs
From the graph, we can see that every 5 minutes Suzanna goes, her distance increases by 1. Since half an hour is 10 minutes away, she would go 2 more miles. 4+2 is 6, so the answer is
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