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doduy5261
2 năm trước
Một chiếc xe tải đi từ điểm A đến điểm B, quãng đường dài 1771/3( hỗn số)Sau khi xe tải xuất phát được 1 giờ, một chiếc xe khách bắt đầu đi từ B về A và gặp xe tải sau khi đi được 1 giờ 40 phút. Tính vận tốc mỗi xe biết rằng mỗi giờ xe khách đi nhanh hơn xe tải 5km nhanh giuap jik nhé
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