题目内容
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．
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
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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