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题目内容双击单词支持查询和收藏哦～
In a driving competition, Jeff and Dennis drove the same course at average speeds of 51 miles per hour and 54 miles per hour, respectively. If it took Jeff 40 minutes to drive the course, how long did it take Dennis?
Give your answer to the nearest 0.1.
Give your answer to the nearest 0.1.
37.8 显示答案
以上解析由 考满分老师提供。
