Giúp mình với.Hứa vẽ vote 5* cho câu trả lời hay nhất Lúc 6 giờ 30 phút sáng An đi từ nhà đến trường bằng xe đạp với vận tốc trung bình là 6 km/h theo đường đi A -> B -> C -> D -> E như trong hình . Nếu có 1 con đường thẳng từ A ->E và đi theo con đường đó với vận tốc trung bình 6 km/h, bạn An sẽ tới trường lúc mấy giờ?

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