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Mathematics, 29.07.2021 21:20 bluebabyyy
Lúc 7 giờ , xe đạp đi từ A với vận tốc 10km/h. Lúc 8h30,xe máy từ A đuổi theo với vận tốc 30km/h. Hỏi sau bao lâu kể từ khi xe đạp xuất phát hai xe gặp nhau lúc mấy giờ?
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Lúc 7 giờ , xe đạp đi từ A với vận tốc 10km/h. Lúc 8h30,xe máy từ A đuổi theo với vận tốc 30km/h. Hỏ...
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