用数学解法和方程解法解决应用题.
A、B之间的公路长380千米,甲、乙两客车分别从A、B同时出发,相向而行.甲车每小时行80千米,乙车每小时行120千米.中途乙车因故障停留了0.25小时,求共经过几小时两车在途中相遇?
人气：416 ℃ 时间：2020-04-07 14:09:31
解答
设x小时相遇
则 80x+120（x-0.25）=380
解得x=2.05
80x为甲行走的路程
x-0.25为乙行走的时间
120（x-0.25）为乙行走的路程
甲乙共走380㎞
是以为80x+120（x-0.25）=380
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