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Mathematics, 19.07.2019 15:10 kkruvc

Una piscina completamente llena se puede vaciar por un desagüe en 10 horas, y por otro, en 15 horas. si se abren ambos de desagüe simultáneamente. en cuanto tiempo variarán la piscina?

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Una piscina completamente llena se puede vaciar por un desagüe en 10 horas, y por otro, en 15 horas....
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