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hanngoc288
2 năm trước
Áp dụng: Một xe máy đi trên đoạn đường AB dài 24 km mất 30 phút. Sau đó, xe đi tiếp đoạn đường BC dài 48 km với vận tốc 24 km/h. Tính: a/ Thời gian xe máy đi trên đoạn đường BC. b/ Vận tốc trung bình của xe máy trên cả 2 đoạn đường.
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