题目

某班同学到离校24千米的农场参观，一部分骑自行车的同学先走，1小时后，没有自行车的同学乘汽车出发，结果他们同时到达农场，已知汽车速度是自行车速度的3倍，求两种车的速度．  答案：解：设自行车的速度是千米/小时，则汽车速度是3千米/小时。       依题意得，············································································ 4分       方程两边同乘以，得72－=24，       解得。···························································································· 7分       经检验，是原方程的解，································································ 8分       ∴原方程的解为，这时=48。答：自行车的速度是16千米/小时，汽车速度是48千米/小时。解析:略 

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