Một người đi xe máy từ B về C với vận tốc 44 km-/ giờ . Cùng lúc đó một ô tô đi từ A đuổi theo xe máy với vận tốc 65 km/ giờ . Sau 1 giờ 20 phút thì ô tô đuổi kịp xe máy . Hỏi quãng đường AB dài bao nhiêu km

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