一个分数的分子扩大到原来的3倍,分母缩小到原来的四分之一后是八分之五,猜猜这个分数是多少?
一个分数的分子扩大到原来的3倍,分母缩小到原来的四分之一后是八分之五,猜猜这个分数是多少?
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设原分数 x/y
(3x)/(y/4)=5/8
12x/y=5/8
x/y=5/96
原分数：5/96