Các bạn giúp mình ạ : giải bằng cách gọi thời gian nhé vào lập phương trình bằng cột quãng đường Một người lái ô tô dự định đi từ A đến B với vận tốc 48km/h. Nhưng sau khi đi được một giờ với vận tốc ấy, ô tô bị tàu hỏa chắn đường trong 10 phút. Do đó, để kịp đến B đúng thời gian đã định, người đó phải tăng vận tốc thêm 6km/h. Tính quãng đường AB.

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