If g:h = 2:3, and j:h = 5:4, then j:g is =

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答案：A

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老师这题不是15:8吗？

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老师为什么我算的是15:8呢？请您帮忙讲下谢谢

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老师我化的新比例是8：12：15，是哪一步出现问题了呀

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