2018 AMC 8 第 17 题
先试着解答 2018 AMC 8 第 17 题，然后核对你的答案与视频与精心整理的解答，解答来自 LIVE by Po-Shen Loh。你也可以参加完整限时模拟考试、查看全部 2018 AMC 8 解答，或核对答案。
所有题目均经美国数学协会（MAA）官方合法授权使用。
17.
Bella 从自己家出发，朝朋友 Ella 家走去。与此同时，Ella 从自己家骑自行车朝 Bella 家出发。她们都保持恒定速度，Ella 骑车速度是 Bella 步行速度的 倍。两家相距 英里，即 英尺，Bella 每一步走 英尺。到两人相遇时，Bella 会走多少步？
Bella begins to walk from her house toward her friend Ella’s house. At the same time, Ella begins to ride her bicycle toward Bella’s house. They each maintain a constant speed, and Ella rides times as fast as Bella walks. The distance between their houses is miles, which is feet, and Bella covers feet with each step. How many steps will Bella take by the time she meets Ella?
小提示：
Ella 的速度是 Bella 的 倍，所以把总距离按 分配
Since Ella is times as fast as Bella, split the distance in the ratio .
大提示：
找到 Bella 走的英尺数后，除以每步 英尺
After finding Bella’s walking distance in feet, divide by feet per step.
视频讲解：
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文字解答：
Ella 每骑 英尺，Bella 走一英尺，所以相遇时 Bella 走了两家距离的 。因此 Bella 走了 英尺。因为她每步走 英尺，到相遇时她走了 步。
所以正确答案是 A。
Since for every foot Bella walks, Ella rides feet, we know that Bella will walk of the distance between the two houses, and so she walks feet. Since she walks feet per step, she takes steps by the time she meets Ella.
Thus, A is the correct answer.
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