1.
(12% + 8%) x 16% 除以 8%
2.
[(150% - 125%)+80%] 除以 10%
3.
Francis had $150. He used 20% of the amount to buy stationery and 34% to buy a toy. He saved 50% of the remainder. How much did he save?
*4.
There are 6 Arts books in a bookcase. The number of Arts books in that bookcase is 25% that of Scientific fictions, and the number of Scientific fictions is 40% of the whole number of books. How many bookds are there in the bookcase?
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中1數學題 (4題) 廿分!!!
2008-08-28 11:40 pm
回答 (2)
2008-09-01 4:54 am
✔ 最佳答案
1. (12% 8%) x 16% / 8%＝(0.12 0.08) * 0.16 / 0.08
＝0.2 * 0.16 / 0.08
＝0.4
2. [(150% - 125%) 80%] 除以 10%
＝[(1.5 - 1.25) 0.8] / 0.1
＝(0.25 0.8) / 0.1
＝1.05 / 0.1
＝10.5
3. [150 * (1- 20% - 34%)] * 50%
＝[150 * (1- 0.2 - 0.34)] * 0.5
＝[150 * 0.46] *0.5
＝69 * 0.5
＝34.5
4. (6 / 25%) / 40%
↑Scientific fictions
＝(6/0.25) / 0.4
＝24/ 0.4
＝60
參考: 自己
2008-08-29 12:04 am
1)(12% + 8%) x 16% 除以 8%
=20%ｘ16%除以 8%
=0.4
2)[(150% - 125%)+80%] 除以 10%
=10.5
3)150Ｘ(1-20%-34%)Ｘ50%
=150x46%x50%
=34.5
4)6除以25%除以40%
=60
=20%ｘ16%除以 8%
=0.4
2)[(150% - 125%)+80%] 除以 10%
=10.5
3)150Ｘ(1-20%-34%)Ｘ50%
=150x46%x50%
=34.5
4)6除以25%除以40%
=60
參考: me
收錄日期: 2021-05-03 06:35:03
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080828000051KK01776