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Two boys,Dudi and Gani ,run back and forth between two point

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Two boys,Dudi and Gani ,run back and forth between two points A and B at a constant speed .
Two boys,Dudi and Gani ,run back and forth between two points A and B at a constant speed without stopping.Dudi's speed is 1.5 times Gani's speed.Dudi runs from A to B while Gani from B to A.They both start at the same time.The two same time.The two boys from A when they meet for the first time at 800 meters away from B.how far are the boys from Awhen thwy meet for the second time?
翻译并解答.麻烦各位了.如果很满意会加100分.
最后一句“Awhen" 是”A when“
很高兴为您
两个男孩,Dudi和Gani,跑个来回A和B两点之间以一个恒定的速度没有停下脚步.Dudi 1.5倍的速度是Gani的速度.从A到B Dudi运行时从A.They Gani B两个先发,在同一时间内.这两所花的时间相同.这两个男孩从第一次见面时,他们在800米远的孩子B.how路程Awhen它们却第二次见面吗?