Mathematics, 22.07.2021 21:30 berniece2002

1 người đi xe đạp từ A đến B với vận tốc là 15km/h. Lúc về người đó đi với vận tốc là 12km/h. Nên thời gian về lâu hơn thời gian đi là 30 phút. Hãy tính quãng đường AB

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1 người đi xe đạp từ A đến B với vận tốc là 15km/h. Lúc về người đó đi với vận tốc là 12km/h. Nên th...

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