复活赛上,甲、乙两人根据投票结果决出最后一个参加决赛的名额,投票人数固定,每票必须投给甲、乙两人之一,最后,乙的得票数为甲的得票数的
,甲胜出,但是,若乙得票数至少增加4票,则可胜甲,请计算甲、乙所得的票数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/310f5366592040027f239d7b8a274ba4.png)
更新时间:2024-03-05 13:30:53
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【知识点】 一元一次不等式组应用解读
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【推荐1】某种植户准备将一批农产品运往外地销售,计划同时租用运输公司的A,B两种型号的货车,租车费用分别是380元/辆,180元/辆,已知A,B两种型号货车的运载能力如图所示.该种植户计划一次性运完21吨农产品,且每辆车都恰好载满货物,请你帮助他设计一种最省钱的租车方案.
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【推荐2】某药店销售
,
两种口罩,每个
种口罩比
种进价多
元,用
元购进
种口罩与用
元购进
种口罩的数量相同.
(1)求
,
两种口罩每个的进价;
(2)药店计划购进
,
两种口罩共
个,其中
种口罩的进货量不多于
个,且
种口罩进货量不超过
种口罩进货量的
倍.设购进
种口罩
个,若
种口罩每个售价
元,
种口罩每个售价
元,药店决定从销售
种口罩的利润中按每个捐款
元给红十字会,做为慈善基金.设药店售完
个口罩并捐款后获得的利润为
元,求药店获得利润
最大时的进货方案.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ec818fc0754296163206e1e8870f9e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1480672ec92c4698aac745b029ad8d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2f7530034abc91d11bc847602eaf5bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)药店计划购进
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1926eb08a21a8b6558fcfd4c52a4a23b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfce2106c9ad85e4965af5d95c9bf4d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91edc7e2d4811f5ea6c01284cf00393a.png)
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