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Bun123
2 năm trước
lúc 6 giờ sáng, một xe máy khởi hành từ A đến B.Đến 7 giờ 30 phút một ô tô thứ hai cũng khởi hành từ A để đi đến B với vận tốc lớn hơn vận tốc ô tô thứ nhất là 20km/h và hai xe gặp nhau lúc 10 giờ 30 phút. Tính vận tốc của xe máy và ô tô ?
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