[数学求教]完全晕了 N times as many X as Y

ryangu619 · 发表于 2010-2-2 22:58:30

In a certain population there are 3 times as many people aged 21 or under as there are people over 21. The ratio of those 21or under to the tatal population is

这里面的as many X as Y到底是3Y还是 3X啊......

脑子绕得完全不转了求教各位大虾

问题比较低幼，勿怪 Orz

55chocolate · 发表于 2010-2-2 23:05:22

年龄是21和21以下的是年龄大于21的人的三倍,ratio is 3/4

song0203 · 发表于 2010-2-2 23:05:42

In a certain population there are 3 times as many people aged 21 or under as there are people over 21. The ratio of those 21or under to the tatal population is

这里面的as many X as Y到底是3Y还是 3X啊......

脑子绕得完全不转了求教各位大虾

问题比较低幼，勿怪 Orz

-- by 会员 ryangu619 (2010/2/2 22:58:30)

as many x as y means x=y
"three times as many x as y" means x=3y

ryangu619 · 发表于 2010-2-2 23:14:18

谢谢大家

Polariswl · 发表于 2010-2-2 23:22:37

N times as many X as Y

ny=x

lrk23 · 发表于 2010-2-2 23:33:39

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[数学求教]完全晕了 N times as many X as Y

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