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题目内容双击单词支持查询和收藏哦～
Andy drove from Townville to Villageton at an average speed of 40 miles per hour. He then drove from Villageton to Townville at an average speed of 60 miles per hour.
Quantity A
50
Quantity B
The average speed of Andy's entire trip in miles per hour.
A显示答案
以上解析由 考满分老师提供。
