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【OG20-P163-112题】
If mn ≠ 0 and 25 percent of n equals percent of m, what is the value of 12nm
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答案 A
【解题思路】
根据题干,有
【知识补充】
等式两边同时乘以或者除以一个数,等号仍然成立,如等式两边同时除掉一个%,等号仍然成立。
题目讨论 (6条评论)

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321800m
你这个网友解析跟我说50n等于74m,然后那么n比m为3比2,这是怎么算出来的?能不能认真点啊 看啥别看网友解析
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0 回复 2022-10-23 11:25:22
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追梦的猪猪
两边都有百分号,两边可以同时去掉:25n = 37.5m。再两边同时乘以2,得:50n=75m,简化得2n=3m,所以 n/m = 3/2。12 n/m = 18
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0 回复 2021-10-28 03:24:16
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567368w
我以为那个1/2是格式错误的次方呢,算半天算不出来,搞半天是个带分数,qswl!为什么体量突然缩小那么多!
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0 回复 2021-07-25 12:29:59
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700+是我的幸运数字
1/4N=3/8M;两边同乘48,同除M; 12N/M=3/8*48
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0 回复 2020-01-20 20:41:07
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bubbles
(25/100)n = (37.5/100)m We can multiply both sides by 100: 25n = 37.5m We can multiply both sides by 10: 250n = 375m We can divide both sides by 25: 10n = 15m 2n = 3m We can multiply both sides by 6 to get the 12n in the numerator of (12n)/m: 12n = 18m Finally, divide both sides by m, obtaining the value of (12n)/m: (12n)/m = 18 Answer: A
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0 回复 2019-01-03 05:07:13
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331637w回复bubbles
这个思路太棒了
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0 回复 2020-11-09 07:49:20
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卢不图
25%n=(37*2+1)/2 * (1/100) m,求12n/m
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0 回复 2018-12-27 10:25:22