1 xe tải và 1 xe con khởi hành cùng lúc từ A đến B. V xe con 60km/h. V xe tải 40km/h. Sau khi đi đc nửa quãng đường xe con nghỉ 40' rồi tiếp tục đi đến B với V cũ. Xe tải k nghỉ và trên quãng đường còn lại tăng thêm v 10km/h. Tuy vậy xe tải vẫn đến chậm hơn xe con 30'. Tính quãng đường AB

Các câu hỏi liên quan

1. Would you mind not making a mess here?  I’d rather ............................................................................................................ 2. The weather was so fine that no one wanted to stay at home.  It was ..................................................................................................................... 3. Laura has more books than Jane. Jane .............................................................................................................................. 4. “What time did you come home last night, Tom?” asked Bill. Bill wanted .................................................................................................................. 5. His alarm clock didn’t go off, so he was late for class. If .............................................................................................................................. 6. They believe the boss’s secretary wrote that letter. The boss’s secretary .................................................................................................... 7. It was such rotten meat that I threw it away The meat ............................................................................................................... 8. She grows up more. She is more beautiful The more................................................................................................................ 9. My English friend finds using chopsticks difficult My English friend isn’t ......................................................................................... 10.“Why don’t we go out for a walk?” My father suggested ................................................................................................