bonjour, je suis en 3ème et je manque de compétences pour cette exercice. Serait t-il possible de m'aider ?
Un journaliste publie dans un article :
« Dans un club sportif «’L’Hivercool’, les trois quarts des adhérents sont mineurs et le tiers des
adhérents majeurs a plus de 25 ans.
Un adhérent sur six a donc entre 18 ans et 25 ans. »
Le journaliste a-t-il raison ?

Merci d'avance pour vos réponses

Question

Question

Grade: Education Subject: mathematiques

Asked by: USER3897

443 Viewed 443 Answers

Answer (443)

USER6561 · Accepted Answer

bonjour,

comme 3/4 des adhérents sont mineurs

alors 1-3/4=1/4

1/4 des adhérents est majeur

2) 1/3 des majeurs a plus de 25 ans

d'où

1-1/3=2/3

2/3 des majeurs a moins de 25 ans

(2/3)*(1/4)=2/12 1/6

d'où

1/6 des adhérents a entre 18 et 25 ans

Answered on 26 Agustus 2025

Question

Answer (443)

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