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dthuong2k1
2 năm trước
1 ng công nhân đi từ nhà tới xưởng mất 40p và đi được 3km a) Tính vận tốc của ng đó ra m/s và km/h b) Biết quãng đường từ nhà đến xưởng là 3600m . Hỏi ng công nhân đi từ nhà đến xưởng mất bao nhiêu phút?
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