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【OG20-P153-48题】
City X has a population 4 times as great as the population of City V, which has a population twice as great as the population of City Z. What is the ratio of the population of City X to the population of City Z?
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【答案】:E
【解析】已知X:Y=4:1,Y:Z=2:1,所以X:Y:Z=8:2:1,则X:Z=8:1
【知识点补充】
在求解两个数x,z的比值时,可以利用一个中间值y,通过变化使得y对应的值是相同的。
题目讨论 (2条评论)

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昏昏昏了
关键是要明白which 指代的是哪个
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0 回复 2020-12-12 22:42:46
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301282vcdeh回复昏昏昏了
学好语法数学都能用的上
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0 回复 2021-02-07 16:38:11
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emily666
X=4V V=2Z X/Z=8/1
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0 回复 2020-03-10 15:06:54