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题目内容双击单词支持查询和收藏哦～
Magdalena took 1 hour to complete a task that had 60 steps. She took 20 minutes to complete the first 30 steps of the task.
Quantity A
The average number of seconds per step that Magdalena took to complete the remaining 30 steps
Quantity B
80
C显示答案
· 相关考点
5.2.1 平均值
5.2.1 平均值
以上解析由 考满分老师提供。
