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El promedio del examen de una clase de 30 estudiantes fue 75. El promedio del examen para los 20 estudiantes varones fue 70. Entonces el

El promedio del examen de una clase de 30 estudiantes fue 75. El promedio del examen para los 20 estudiantes varones fue 70. Entonces el promedio para las 10 estudiantes mujeres fue:

85
80
75
Ninguna de lasanteriores

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