题目来源
题目来源1 : 2020年GRE数学新800题
正确率：66%
难度：4
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Company A and B earn commission fees based on their sales.
If company A sells $3,000, then how much does company B have to sell such that company B earns the same commission fee as company A?
If company A sells $3,000, then how much does company B have to sell such that company B earns the same commission fee as company A?
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以上解析由 考满分老师提供。
