POUR DEMAIN, URGENT SVP
Démontrer rigoureusement qu'une augmentation de 30% suivi d'une diminution de 30% revient à effectuer une baisse de 9%

pouvez vous m'aider ?

By: USER4198
27 Agustus 2025 mathematiques 5 minutes
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Question

Grade: Education Subject: mathematiques
POUR DEMAIN, URGENT SVP
Démontrer rigoureusement qu'une augmentation de 30% suivi d'une diminution de 30% revient à effectuer une baisse de 9%

pouvez vous m'aider ?
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Answer (183)

Best Answer
(112)
augmentation 30% = cm 1,30
baisse 30% = cm 0,7

1,3*0,7 = 0,91

(1-0,91)*100 = 9%
Answered on 27 Agustus 2025

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