快怏怏!明天要交功課!40點

2007-07-11 11:26 pm
1.半打雪糕售54元,姐姐買31杯,付100元紙幣2張,尚欠多少元?
多謝你們!

回答 (18)

2007-07-12 12:04 am
✔ 最佳答案
其實係數學題定IQ題?
如果係正常數學題,上面有好多人已經列左條式俾你,你參考返佢地答案就得.
如果係IQ題,咁就要小心0的字眼,.
佢一開始話半打雪糕,係咪意味住一買要買半打,唔可以拆開買?
如果係咁的話,咁姐姐要買31杯,即係要買6個半打先至得,總數係6X54=324
所以姐姐俾左200蚊,仲欠124蚊.
可能我諗得太複雜.嘻嘻.

2007-07-12 12:03:22 補充:
似乎唔係IQ題喎:)1) ($54/6 x 31) - ($100 x 2) = $279 - $200 =$79 即尚欠$792) 買菜心2公斤和蔥:3公斤($80/5 x 2) + ($80/5-5 x 3) = $32 + $33 = $65 共要付$65p.s.我想問你讀幾年班呀?你唔識題目要問老師或者屋企人喎,佢地先可以詳細講俾你知點解咁計.你靠係YAHOO問我地,解釋未夠當面問人咁詳細咖.咁你學唔到野咖.:)你次次做功課咁問人都唔係辦法,你唔可以不求甚解咁抄答案落去.勸你問一問老師仲好哩:)
2007-07-12 5:56 am
1.(54×5+59÷4)-200=79 2.( 80÷5)×2+(80÷5-5)×3=65 (努力!加油!希望幫到你)
參考: me
2007-07-12 4:17 am
1.(54除6x31)-100x2
=279-200
=79(元)

2.80除5x2+80除5-5x3
=32+33
=65(元)
2007-07-12 1:58 am
1. 54/6X31-200
=9X31-200
=279-200
=79
尚欠79元。

2. 80/5X2+(80-5)/5X3
=80/5X2+75/5X3
=16X2+75/5X3
=32+15X3
=32+45
=77
共需付77元。
2007-07-12 12:57 am
尚欠:
54/6x31-100x2
=9x31-100x2
=279-100x2
=279-200
=79(元)
參考: me
2007-07-11 11:40 pm
一杯雪糕售9元,姐姐買31杯 = 279元

付100元紙幣2張 = 200元

尚欠 = 279元 - 200元 = 79元
2007-07-11 11:32 pm
54/6 =9
9*31=279

279-200=79
尚欠79
2007-07-11 11:32 pm
100x2-(54÷6)x31〕
Or其它答案!!But hope can help u!!
參考: myself
2007-07-11 11:31 pm
54/6*31-100*2=79
2007-07-11 11:30 pm
(54/6 ) X 31 - 100X2 = 79


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