Mathematics
Mathematics, 19.07.2020 18:01, yangyang718

7. Juan resuelve un examen que contiene 40 preguntas, se sabe que el número de preguntas buenas es el triple del número de preguntas malas (no dejó ninguna pregunta en blanco). ¿Cuántas preguntas buenas contestó? Si por cada pregunta le asignan 3 puntos y por cada error le restan un punto ¿Cuál fue su puntaje? A) 10,90 B) 20,100 C) 30,80 D) 40,60 E) 50,120

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7. Juan resuelve un examen que contiene 40 preguntas, se sabe que el número de preguntas buenas es e...

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