趣题实录:有两条公路成十字交叉,甲从十字路口北1350米处往南直行;乙从十字路口处向西直行。二人同时出发,10分钟后,二人离十字路口的距离相等;二人仍保持原速继续直行,又过了80分钟,这时二人离十字路口的距离又相等。求甲、乙二人的速度。 Record of the Fun Fact: There are two roads into a cross, A from the crossroads 1350 meters north south straight; B from the crossroads west straight. Two people at the same time starting, 10 minutes later, two people from the crossroads at the same distance; two still keep the original speed continue straight, another 80 minutes, then two people from the intersection of the same distance. A, B two speed.