选择题
2022 AMC 8 Problem 7: Download Speed
When the World Wide Web first became popular in the 1990s, 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.)
2022 AMC 8 第7题：下载速度
当万维网在 20 世纪 90 年代首次流行时，下载速度最高可达每秒 56 kb。以该速度下载一首 4.2 MB 的歌曲大约需要多少分钟？ （请注意，1 兆字节有 8000 千位。）
A.
0.6
B.
10
C.
1800
D.
7200
E.
36000