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hongsy2108
2 năm trước
BÀI SỐ 101: Một ô tô và một xe máy cùng xuất phát đi từ A để đến B . Biết quãng đường AB dài 150 km ,vận tốc của ô tô là 50 km , vận tốc của xe máy là là 40 km. Hỏi khi ô tô đến B thì xe máy cách B bao nhiêu km?
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