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2023-05-08 19:54:43
2023-05-07 20:13:08
đổi 1 giờ 30 phút = 1,5 giờ
Độ dài đoạn dường AB là:
60x1.5=90(km)
vận tốc xe mấy là:
60x\(\dfrac{3}{5}\)=36(km/giờ)
thời gian xe mấy đi từ A đến B là:
90:36=2,5(km)
đáp số:2,5 giờ