去年黃先生在銀行的儲蓄戶口有$5000 . 今年則變成$10000 .
(b)黃先生從戶口中提左40%的金額 . 與去年比較,他現時儲蓄金額的百分數增減 .
Help MAths 唔該
2006-11-08 5:13 am
回答 (2)
2006-11-08 5:28 am
✔ 最佳答案
current amount is 10000 * (1-40%) = 6000(6000 - 5000)/5000 = 0.2 = 20% increase
2006-11-09 2:32 am
[10000*[1-40%]-5000]/5000
=[10000*60%]-5000]/5000
=[6000-5000]/5000
=1000/5000
=20%
=[10000*60%]-5000]/5000
=[6000-5000]/5000
=1000/5000
=20%
收錄日期: 2021-05-03 05:47:31
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20061107000051KK04221