100%
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70楼#
发布于：2016-03-12 18:24
X158658552181：没赚吧.....回到原帖赚两元  |
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![35天勇士[春]](https://bbs.jd100.com/attachment/medal/5d99a02fd9b5f0c.png "35天勇士[春]"){kind=small}
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![20天大作战[2015]](https://bbs.jd100.com/attachment/medal/cec543c13f7ea1b.jpg "20天大作战[2015]"){kind=small}
![7天勇士[秋]](https://bbs.jd100.com/attachment/medal/d73ac334c487136.jpg "7天勇士[秋]"){kind=small}
![14天勇士[秋]](https://bbs.jd100.com/attachment/medal/295c62a2b4d041f.jpg "14天勇士[秋]"){kind=small}
![21天勇士[秋]](https://bbs.jd100.com/attachment/medal/541a6942efb56d6.jpg "21天勇士[秋]"){kind=small}
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![35天勇士[秋]](https://bbs.jd100.com/attachment/medal/9711324dad47033.jpg "35天勇士[秋]"){kind=small}
![42天勇士[秋]](https://bbs.jd100.com/attachment/medal/2d9e801cfb776ea.jpg "42天勇士[秋]"){kind=small}
![49天勇士[秋]](https://bbs.jd100.com/attachment/medal/62380d144806ce9.jpg "49天勇士[秋]"){kind=small}
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71楼#
发布于：2016-03-12 22:40
看看答案是也
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72楼#
发布于：2016-03-13 13:53
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73楼#
发布于：2016-03-19 21:09
2元，。。。
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74楼#
发布于：2016-03-19 21:21
w836084234：看看答案是也回到原帖2元 (*^__^*) 嘻嘻…… |
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75楼#
发布于：2016-03-25 21:29
。。。。。。。。。
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76楼#
发布于：2016-03-26 09:18
123456
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77楼#
发布于：2016-03-26 15:54
。。
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78楼#
发布于：2016-03-26 21:08
swd19990105：123456回到原帖678910 |
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79楼#
发布于：2016-03-26 22:53
设有x个大人，y个小孩。那么一次对应包子数有3x，3y个
则 有方程组x+3y=100 3x+y=100联立方程解得x=75,y=25 |
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