2026 AMC 8 第 5 题
先试着解答 2026 AMC 8 第 5 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 2026 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。
5.
Casey 开车旅行了 英里，途中只停下来吃了一次午饭。整趟旅行总共用了 小时，开车时的平均速度是每小时 英里。她的午饭休息用了多少分钟？
Casey went on a road trip that covered miles, stopping only for a lunch break along the way. The trip took hours in total and her average speed while driving was miles per hour. In minutes, how long was the lunch break?
答案：B
小提示：
先用路程除以速度，求出实际开车的时间。
Find the driving time from distance and speed
大提示：
午饭时间等于总时间减去开车时间。
The lunch break is the total time minus the driving time
视频讲解：
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文字解答：
以每小时 英里行驶 英里，需要 小时。整趟旅行用了 小时，所以午饭休息用了 小时，也就是 分钟。
Driving miles at miles per hour takes hours. The whole trip took hours, so the lunch break lasted hours, which is minutes.
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