Question

Quãng đường từ Hà Nội đến một địa điểm của một tỉnh khoảng 300 km . Một xe ô tô đi từ Hà Nội về địa điểm đó với vận tốc 68km/giờ , một xe ô tô khác đi từ địa điểm đó ra Hà Nội với vận tốc 52km/giờ . Biết 2 xe cùng đi trên một đường , hỏi sau bao lâu hai xe gặp nhau ?

Answer 1

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