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nguyenngocanhduy147
2 năm trước
Một người đi xe đạp từ B đến C lúc 13giờ 30phút với vận tốc 12km/giờ, cùng lúc đó một người đi xe máy từ A cách B là 48km với vận tốc 36km/giờ và đuổi theo xe đạp. Hỏi: a) Kể từ lúc bắt đầu đi, thời gian xe máy đuổi kịp xe đạp là bao lâu? b) Xe máy đuổi kịp xe đạp lúc mấy giờ? Giúp mình làm bài này nhá
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