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2023-03-27 21:11:06
Trung binh mỗi giờ là vận tốc
2023-03-27 21:10:04
Trung bình mỗi giờ là vận tốc
2023-03-27 21:09:18
Trung bình mỗi giờ xe đó đi được là
56÷1,5=112/3 km
xe máy đó đi trong số giờ là
140÷ 112=3=3,75 giờ = 3 giờ 45 phút
đáp số 3 giờ 45 phút