Burton Mcguire
12/29/2023 · Senior High School
Exercice 3 Chloé promet à ses parents d'améliorer ses résultats au deuxième trimestre: "Je vais aug- menter ma moyenne de maths de \( 15 \% \). " "Mais tu n'as que \( 5 / 20 \) actuellement », affirme son père. "Eh bien, 5 et 15 font 20 », répond Chloé. Calculer la moyenne réellement promise par Chloé au deuxième trimestre.
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La moyenne promise par Chloé est \( 5,75/20 \).
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