Physics, 27.09.2021 19:20 lakaralake11
xe thứ nhất khởi hành từ A đến B với vận tốc 40km/h sau 30 phút xe thứ 2 khởi hành từ B đến A với vận tốc 36km/h hỏi sau bao lâu 2 xe gặp nhau
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xe thứ nhất khởi hành từ A đến B với vận tốc 40km/h sau 30 phút xe thứ 2 khởi hành từ B đến A với vậ...
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