“海王星”提问：各位老师好！我女儿这道题该怎么做？题目：四（1）班48名师生去划船。有两种船可以租，小船：每条可坐3人，租金8元/小时；大船：每条可坐5人，租金12元/小时。他们最少要付多少元的租金？

数学题解答：尽量用大船，因为大船平均每人花：12÷5＝2.4元，而小船平均每人要花：8÷3≈2.67元，可以看出大船更实惠。

再看48个人里，5个人为一组，可以分多少组？就需要几条大船？

48÷5＝9（条）……3（人）

所以租9条大船，剩下3人再为他们租一条小船就可以了

租金是：12×9+8＝116（元）

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