數學問題--百分數

2006-12-08 7:24 am

數學測驗有50題，明明答對了35題，答對的題目比答錯的多百分之幾??

急!!!

回答 (5)

2006-12-08 7:27 am

✔ 最佳答案

(35-15)/15 * 100 %

= 133%

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2006-12-08 7:49 am

[35-(50-15)]
--------------- x100%=
50

(35-15)
----------- x100%=
50

20
-----x100%=
50

40%

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2006-12-08 7:32 am

35/50-(50-35)/50*100%
=40%

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2006-12-08 7:30 am

35-(50-35)/50x100%
=15/50x100%
=0.3x100%
=30%

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2006-12-08 7:28 am

35/50 - (50-35)/50
= (35-15)/50
=20/50
=2/5
= 40%

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