AMC8 2009
AMC8 2009 · Q3
AMC8 2009 · Q3. It mainly tests Rates (speed).
The graph shows the constant rate at which Suzanna rides her bike. If she rides a total of half an hour at the same speed, how many miles will she have ridden?
图表显示了Suzanna骑自行车的恒定速率。如果她以相同的速度骑总共半小时，她将骑多少英里？
(A)
5
5
(B)
5.5
5.5
(C)
6
6
(D)
6.5
6.5
(E)
7
7
Answer
Correct choice: (C)
正确答案：（C）
Solution
Answer (C): Suzanna rides at a constant rate of five minutes per mile. In 30 minutes there are six 5-minute intervals, so she travels six miles.
答案（C）：Suzanna 以每英里 5 分钟的恒定速度骑行。30 分钟里有 6 个 5 分钟的时间段，所以她行驶了 6 英里。
Topics
Related Questions
Practice full AMC exams on amcdrill.
Try full-length practice and diagnostics at www.amcdrill.com.