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Cuantos litros de una solución al 30% deben agregarse a 10 litros de igual solución al 16% para producir una al 25%
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Cuantos litros de una solución al 30% deben agregarse a 10 litros de igual solución al 16% para producir una al 25%

User Dan Stark
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30% - 10% = 20% + 16% =36% - 25% = 11%
User Alexander Stolz
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