Physics, 26.06.2019 14:30 SymiaF4980
Một chiếc thuyền có tốc độ 15 km / h trong nước tĩnh lặng đi 30 km về phía hạ lưu và trở lại trong tổng cộng 4 giờ 30 phút. tốc độ dòng chảy (theo km / h) là:
Answers: 1
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Một chiếc thuyền có tốc độ 15 km / h trong nước tĩnh lặng đi 30 km về phía hạ lưu và trở lại trong t...
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