數學叻入來

2007-01-10 2:55 am
班中有18個男,12個女,男佔全班的歹百分之幾?(列式計算)
記住寫哩步驟

回答 (14)

2007-01-10 2:59 am
✔ 最佳答案
男佔有:

18/(12+18)x 100%

=18/30 x100%

=60%

所以男佔全班的百分之六十。
2007-01-11 7:53 am
18/30*100%
=18/3*10
=6*10
=60%
2007-01-10 3:11 am
60%

百份之六十
2007-01-10 3:10 am
18+12=30 30-12 = (boy) 30-18=(girl)

2007-01-09 19:12:15 補充:
girl 12% boy is 18% ?? classroom boy and gair is 30%
2007-01-10 3:08 am
18(男生人數)
────────────X 100%(百分比作算用)
( 12(女生人數)+18(男生人數) )

18(男生人數)
= ────────────X 100%(百分比作算用)
30(總人數)

= 60%(男生人數佔全班人數 60個百分比)
2007-01-10 3:06 am
男佔有:

18/(12+18)x 100% (12+18)是總人數 ,18 是男生人數
x 100%昳變成百分數
=18/30 x100%

=60%

所以男佔全班的百分之六十。
2007-01-10 3:05 am
...
心算都得la...60% loh...=.="
2007-01-10 3:01 am
18
-------------
18+12

18
= ----------x100%
30

=60%
參考: Me
2007-01-10 3:00 am
(18+12)

_18_
30
參考: me
2007-01-10 3:00 am
18/30*100%
=18/3*10
=6*10
=60%

There are 60% of boys in the class.
2007-01-10 2:58 am
18/30 *100%
參考: me


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