230问答网 > 24名同学去公园划船,每条大船限乘7人,租金35元,每条小船限乘5人,租金30元,怎样租船最省钱

24名同学去公园划船,每条大船限乘7人,租金35元,每条小船限乘5人,租金30元,怎样租船最省钱

最少要用多少钱?
2025-04-06 04:17:50
推荐回答（3个）
回答1：

设大船X人，小船Y人，0<=x<=4,0<=y<=5则7X+5y>=24;z=35x+30y；然后在坐标系中画图表示前三个不等式，最后一个不等式y=z-35x除以30向上移近区域表示区域，最先靠近的便是答案

回答2：

2条大船，2条小船。
租金：35x2+30x2=130（元）
租船（租车）问题，一般是尽量租大船，而且所有船没有空位。

回答3：

2条大船2条小船
2 × 7 ＝14 2 × 35 ＝ 70
2 × 5 ＝10 2 × 30 ＝ 60
70 ＋ 60 ＝ 130

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