New + %
1. 300 384 ? ?%
2. 250 ? 95 ? %
3.420 ? ? 15%
(2)
1. 250cm3 +18% -?cm3
250X(1+--______)=___________(cm)
400cm3 -16.5% + ?cm3
400X(1-____-__________)=_____( )
數學的問題(%)
2007-07-31 1:36 am
回答 (2)
2007-07-31 2:25 am
✔ 最佳答案
(1)1.
(384-300)/300 = 84/300
= 0.28
Ans: 300 + 28% = 384
2.
(250-95)/250 = 155/250
= 0.62
Ans: 250 + (-62%) = 95
3.
420+15% = 420*1.15
= 483
(2) 唔係好明你想問咩...
1.
250cm3 +18%
250*(1+ 0.18) = 250*1.18
= 295(cm3)
2.
400cm3 -16.5%
400* (1-0.165) = 400*0.835
= 334
2007-07-31 2:03 am
1. 250cm3 +18% -?cm3
250X(1+0.18)=__295_________(cm)
250X(1+0.18)=__295_________(cm)
收錄日期: 2021-04-13 14:22:39
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070730000051KK03947