1999 AMC 8 第 7 题
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所有题目均经美国数学协会（MAA）官方合法授权使用。
7.
一条高速公路的第三个出口在 英里标处，第十个出口在 英里标处。一个服务中心位于从第三个出口到第十个出口路程的四分之三处。这个服务中心应在多少英里标处？
The third exit on a highway is located at milepost and the tenth exit is at milepost There is a service center on the highway located three-fourths of the way from the third exit to the tenth exit. At what milepost would you expect to find this service center?
答案：E
小提示：
先求 和 两个英里标之间的距离
First find the distance between mileposts and
大提示：
从 英里标向前走这段距离的
Move of that distance past milepost
解答：
第三个和第十个出口之间相差 英里。
这意味着全程的 处位于 英里标处。
所以正确答案是 E。
There are miles between the third and tenth exits.
This means of the way is at the milepost.
Thus, E is the correct answer.
其他年份的第 7 题
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