AMC 8 2022 Problem 7
AMC8 2022 年第 7 题
表达式与运算★☆☆☆☆
When the World Wide Web first became popular in the 1990 s, download speeds reached a maximum of about 56 kilobits per second. Approximately how many minutes would the download of a 4.2 -megabyte song have taken at that speed? (Note that there are 8000 kilobits in a megabyte.)
当全球互联网刚开始在 20 世纪 90 年代流行时，下载速度最高为每秒 56 千比特。以这样的速度下载一首 4.2 兆字节的歌曲大约需要多少分钟？（请注意，一兆字节相当于 8000 千比特）
- A.0.6
- B.10
- C.1800
- D.7200
- E.36000
正确答案 · Correct Answer
B
解析 · Solution
解析整理中
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