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Mathematics, 16.05.2021 06:50 kaciewelkerouwdfa
Dos llaves de agua llenan un tanque en 2 horas, y otra llave lo llena en 4 horas, ¿en cuántas horas llenan las dos llaves juntas?
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Dos llaves de agua llenan un tanque en 2 horas, y otra llave lo llena en 4 horas, ¿en cuántas horas...
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