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题目内容双击单词支持查询和收藏哦～
Geoff used $630 to buy a new guitar. This amount was 15 percent of his earnings last summer.
Quantity A
The amount of Geoff's earnings last summer not used to buy the new guitar
Quantity B
$3,570
C显示答案
以上解析由 考满分老师提供。
