Mathematics, 11.02.2021 17:40 dyhji

Una lancha cuya velocidad es de 15 km/h en aguas quietos va 30 km río abajo y regresa en un total de 4 horas y 30 minutos. La velocidad de la corriente es

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Una lancha cuya velocidad es de 15 km/h en aguas quietos va 30 km río abajo y regresa en un total de...

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