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bichliennh55
2 năm trước
Một canô đi xuôi dòng từ A đến B hết 4 giờ và ngược dòng từ B đến A hết 6 giờ .Biết vận tốc của dòng nước là 3km/giờ .Tính a) Chiều dài quãng sông AB b) Tính vận tốc canô khi nước Giúp mình với ạ. Mình xin cảm ơn
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