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Mathematics, 10.08.2021 15:10 monsurviky

Một ô tô đi hết quãng đường dài AB mất 8 giờ. Lúc đầu, ô tô đi với vận tốc 40 km/h sau đó ô tô đi với vận tốc 60 km/h. Hỏi ô tô đi bao nhiêu thời gian với vận tốc 40 km/h? Biết rằng quãng đường AB dài 360 km.

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Một ô tô đi hết quãng đường dài AB mất 8 giờ. Lúc đầu, ô tô đi với vận tốc 40 km/h sau đó ô tô đi vớ...

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