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lop92lua
2 năm trước
Câu 2. Hai người đi xe đạp xuất phát cùng một lúc, nhưng từ hai địa điểm M và N cách nhau 50km. Người đi từ M đến N với tốc độ 10km/h, người đi từ N tới M có vận tốc là 15km/h. Hãy tính xem sau bao lâu họ gặp nhau và cách M bao nhiêu?
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