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