本课配套习题挑战模式1/5
某车队要把60吨货物从甲地运往乙地. 已知大卡车每次可运10吨,运费200元;小卡车每次可运4吨,运费90元. 请设计一种最优租车方案(运费最省),
在你设计的最优方案中,一共用了( )辆小卡车和( )辆大卡车
A: 一共用了3辆小卡车和4辆大卡车 |
B: 一共用了2辆小卡车和4辆大卡车 |
C: 一共用了1辆小卡车和4辆大卡车 |
D: 一共用了4辆小卡车和4辆大卡车 |
- 提示1:PHA+5aSn5Y2h6L2m5q+P5ZCo55qE6L+Q6LS55pivMjAww7cxMD0yMOWFg++8jOWwj+WNoei9puavj+WQqOeahOi/kOi0ueaYrzkww7c0PTIyLjXlhYPvvIzmiYDku6XlsL3ph4/nlKjlpKfljaHovabmr5TovoPkvr/lrpw8L3A+
- 提示2:PHA+6ICMOTY9ODArMTY9OMOXMTArNMOXNO+8jOaJgOS7pemcgOimgTjovoblpKfljaHovablkow06L6G5bCP5Y2h6L2m6KaB5oOz6K6+6K6h5Ye65oC76L+Q6LS55pyA5bCR55qE5pa55qGIPC9wPg==
- 答案:RA==
PGRpdj7op6PvvJrlm6DkuLrlpKfljaHovabmr4/lkKjnmoTov5DotLnmmK/vvJoyMDDDtzEwPTIw77yI5YWD77yJ77yMPGJyPuWwj+WNoei9puavj+WQqOeahOi/kOi0ueaYr++8mjkww7c0PTIyLjXvvIjlhYPvvInvvIw8YnI+MjDvvJwyMi4177yMPGJyPuaJgOS7peWwvemHj+eUqOWkp+WNoei9puavlOi+g+S+v+WunO+8jOiAjDYwPTQwKzIwPTTDlzEwKzTDlzXvvIw8YnI+5omA5Lul55SoNOi+huWkp+WNoei9puWSjDXovoblsI/ljaHovablsIY5NuWQqOi0p+eJqeS4gOasoeS7jueUsuWcsOi/kOW+gOS5meWcsC48YnI+562U77ya5LiA5YWx55So5LqGNOi+huWwj+WNoei9puWSjDTovoblpKfljaHovaY8L2Rpdj4=
本课配套习题挑战模式2/5
北京和上海分别制成了同一型号的电子计算机若干台,除本地应用外,北京可支援外地20台,上海可支援外地10台,现在决定给重庆16台,郑州14台. 若每台计算机的运费如图(单位:元). ( )运输方案,能使总的运费最省
A: 上海运往重庆0台,上海运往郑州10台,北京运往重庆16台,北京运往郑州4台 |
B: 上海运往重庆10台,上海运往郑州0台,北京运往重庆4台,北京运往郑州16台 |
C: 上海运往重庆10台,上海运往郑州0台,北京运往重庆16台,北京运往郑州4台 |
D: 上海运往重庆0台,上海运往郑州10台,北京运往重庆4台,北京运往郑州16台 |
- 提示1:PHA+5pyA55yB55qE5oC755qE6L+Q6LS55piv6ZqP552A6L+Q5b6A5p+Q5Zyw55qE5Y+w5pWw55qE5Y+Y5YyW6ICM5Y+Y5YyW55qEPC9wPg==
- 提示2:PHA+5qC55o2u4oCc5oC76L+Q6LS5PeWbm+WcsOeahOi/kOi0ueaAu+WSjOKAneWIl+WHuuaWueeoi++8jOeEtuWQjuiuqOiuuuaegeWAvO+8jOWNs+WPr+W+l+WHuue7k+iuujwvcD4=
- 答案:QQ==
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
本课配套习题挑战模式3/5
某校六年级共有师生230人准备租车出去秋游. 已知大客车每辆限坐42人,每天租金1000元;中巴每辆限坐24人,每天租金600元. ( )租车方案,最合算
A: 租大客车4辆,中巴车2辆 |
B: 租大客车5辆,中巴车1辆 |
C: 租大客车1辆,中巴车5辆 |
D: 租大客车2辆,中巴车4辆 |
- 提示1:PHA+5qC55o2u6aKY5oSP55+l6YGT77yM5aSn5a6i6L2m77yM5q+P5Liq5bqn5L2N6LS555So5Li6MTAwMMO3NDLiiYgyNOWFg++8jOS4reW3tOi9pu+8jOavj+S4quW6p+S9jei0ueeUqOS4ujYwMMO3MjQ9MjXlhYPvvIzmmL7nhLblsL3lj6/og73lpJrph4fnlKjlpKflrqLovabvvIzlubbkuJTnqbrluqfkvY3mnIDlsJHml7bkvr/lrpwuPC9wPg==
- 答案:Qg==
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
本课配套习题挑战模式4/5
某公司在A、B两地分别有库存机器16台和12台,现要运往甲、乙两地,其中甲地15台,乙地13台,从A地运一台到甲地的运费为500元,到乙地的运费为400元,从B地运一台到甲地的运300元,到乙地为600元,公司应怎样设计( )调运方案,能使这些机器的总运费最省(设从A运到甲地的机器为X台,总运费为Y元).
A: 从A地运往甲地2台,从A地运往乙地14台,从B地运往甲地12台,从B地运往乙地0台 |
B: 从A地运往甲地3台,从A地运往乙地13台,从B地运往甲地10台,从B地运往乙地2台 |
C: 从A地运往甲地3台,从A地运往乙地13台,从B地运往甲地12台,从B地运往乙地0台 |
D: 从A地运往甲地2台,从A地运往乙地14台,从B地运往甲地10台,从B地运往乙地2台 |
- 提示1:PHA+5oC76L+Q6LS55bqU562J5LqO6L+Q5b6A5LiN5ZCM5Zyw5pa55LiA5Y+w5py65Zmo55qE6L+Q6LS5w5fnm7jlupTnmoTlj7DmlbDnmoTotLnnlKjnmoTlkow8L3A+
- 提示2:PHA+5qC55o2u5Y+w5pWw5Li66Z2e6LSf5pWw5Y+v5b6X6Ieq5Y+Y6YeP55qE5Y+W5YC86IyD5Zu0PC9wPg==
- 提示3:PHA+5qC55o2u5oC76L+Q6LS555qE5Ye95pWw5YWz57O75byP5Lul5Y+K6Ieq5Y+Y6YeP55qE5Y+W5YC85Y+v5b6X5pyA55yB6L+Q6LS555qE5pa55qGILjwvcD4=
- 答案:Qw==
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
本课配套习题挑战模式5/5
煤炭是龙岩市的主要矿产资源之一,每天有大量的煤炭运往外地. 某煤矿现有100吨煤炭要运往甲、乙两厂. 通过了解获得甲、乙两厂的有关信息如下表:(表中运费栏“元/t•km”表示每吨煤炭运送二千米所需人民币)
要把100吨煤全部运出,试写出总运费y(元)与运往甲厂x(吨)煤炭之间的函数关系式;如果你是该矿的矿主,( )方案,能使所需的总运费最低
A: 运往甲厂20吨,乙厂80吨 |
B: 运往甲厂30吨,乙厂70吨 |
C: 运往甲厂40吨,乙厂60吨 |
D: 运往甲厂50吨,乙厂50吨 |
- 提示1:PHA+5oC76LS555SoPei/kOW+gOeUsuWOgueahOi0ueeUqCvov5DlvoDkuZnljoLnmoTotLnnlKguPC9wPg==
- 提示2:PHA+5qC55o2u5Zu+6KGo5Lit57uZ5Ye655qE5Yik5a6a5ZCo5pWw55qE5p2h5Lu277yM566X5Ye66Ieq5Y+Y6YeP55qE5Y+W5YC86IyD5Zu077yM54S25ZCO5qC55o2u5Ye95pWw55qE5oCn6LSo5p2l566X5Ye65omA5rGC55qE5pa55qGILjwvcD4=
- 答案:QQ==
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