AMC 8 1992 Problem 18

AMC8 1992 年第 18

行程问题★★★☆☆
Problem On a trip, a car traveled 80 miles in an hour and a half, then was stopped in traffic for 30 minutes, then traveled 100 miles during the next 2 hours. What was the car's average speed in miles per hour for the 4 -hour trip?
在一次旅行中,一辆汽车用了一个半小时行驶 80 英里,然后在交通中停了 30 分钟,然后在接下来的 2 小时内行驶了 100 英里。这 4 小时行程中汽车的平均速度是多少英里/小时?
  1. A.45
  2. B.50
  3. C.60
  4. D.75
  5. E.90

正确答案 · Correct Answer

A

解析 · Solution

解析整理中

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