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题库 / Prep2007E1-PS-69
The number of stampsthat Kaye and Alberto had were in the ratio 5 : 3, respectively. After Kaye gave Alberto 10 of her stamps, theratio of the number Kaye had to the number Alberto had was 7 : 5. As a result of this gift, Kaye had how manymore stamps than Alberto?
20
30
40
60
90
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好阴险，问的是送礼物之后的比值
正想这么说，哈哈
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