趣味的数学-62

作者:gugeren
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趣味的数学-62


轿车位于A点,货车位于B点。轿车的速度是货车的x倍。

如果两车分别从A点和B点出发,轿车追赶上货车的时间,是它们互相对开后相遇的时间的x倍。

求x。

【The American Mathematical Monthly,1960,problem E1386】


【原文】

In overtaking a freight, a passenger train, which is x times as fast, takes x times as long to pass as it takes the two trains to pass when going in opposite directions.

Find x.