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Yahoo!奇摩知識+ - 分類問答 - 科學常識 - 已解決
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數重第六單元 比,比值與成正比
Nov 11th 2013, 11:05

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1.24/7:3/2=32:X 內項乘積等於外項乘積所以3/2乘以32=24/7乘以X 48*7/24=X X=14 以上 2.18/3=6 50*6=300 如果依照上述題目的問題300元應為答案!...
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