期刊：Mathematics Teaching in the Middle School [National Council of Teachers of Mathematics] 日期：2006-02-01卷期号：11 (6): 298-301
标识
DOI：10.5951/mtms.11.6.0298
摘要
The following problem appeared in the october 2004 issue of this journal: A college sold tickets to a play at $4 per ticket. Anyone who attended and purchased a ticket at the door had to pay $5 a ticket. A total of 480 people attended the play, and the revenue from the ticket sales was $2100.
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拆迁办禁言
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