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標題:

折扣(40分)

發問:

(1) 原價:$395 NOW:209 求折扣 (2) 原價:$44 NOW:36.9 求折扣 請列式計算,記住寫?%

最佳解答:

( 395 - 209 ) / 395 X 100 % OFF 186 / 395 X 100 % OFF 0.47 X 100 % OFF 47$ OFF = 53 拆 ( 44 - 36.9 ) / 44 X 100% OFF 7.1 / 44 X 100 % OFF 0.16 X 100 % OFF 16 % OFF = 84拆

其他解答:

1.(209over395)乘100% =52又79分之72% 小數後兩位﹕52.91%，大約為五三折。 2.(36.9over44)乘100% =83又22分之19% 小數後兩位﹕83.86%，大約為八四折。|||||(1) 原價:$395 NOW:209 求折扣 (209/395) * 100%=52.9% (2) 原價:$44 NOW:36.9 求折扣 (36.9/44) * 100%=83.86%|||||(1) First: Calculate Cash Discount = $395 - $209 = $186 Second: Divide Cash Discount to 原價 = $186 / $395 = 0.471 = 47.1% off the 原價 Third: 1 - 0.471 = 0.529 = 52.9% of the 原價 In summary: the equation (列式) is 1-((395-209)/395)=0.529 -> 0.529x100% = 52.9% (2) First: Calculate Cash Discount = $44 - $36.9 = $7.1 Second: Divide Cash Discount to 原價 = $7.1 / $44 = 0.161 = 16.1% off the 原價 Third: 1 - 0.161 = 0.839 = 83.9% of the 原價 In summary: the equation (列式) is 1-((44-36.9)/44)=0.839 -> 0.839x100% = 83.9%|||||(1) $209/$395 = 0.52911 = 52.911% (2) $36.90/$44.00 = 0.838636 = 83.8636% 兩個的折扣均不是完整的百分比，只可以四捨五入取近似值 (1)的折扣是大約五二折，英文為47.099%off (2)的折扣大約為八三折，英文為16.1364%off|||||1) (395-209)/395=186/395=est.47.08% 2) (44-36.9)/44=7.1/44=16.136363....%|||||(1) (209/395) * 100% =52.9% (2) (36.9/44) * 100% =83.86%|||||(1-209/395)x100%=47.088608% (1-36.9/44)x100%=16.136364% 2007-05-12 01:38:29 補充： the discount percentage is an english version, i.e. 47.088608% off.中文應寫成五三折或五折三扣6A560DB68EC65D60