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trin99481
2 năm trước
Một người đi xe máy từ A đến B .Cùng lúc đó một người đi ô tô từ B đến A trên cùng con đường đó với vận tốc lớn hơn vận tốc của người đi xe máy là 10km/h, sau 1 giờ 30 phút họ gặp nhau. Tính vận tốc của mỗi người, biết quãng đường AB dài 135 km.(có vote)
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