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ArthurHENIN
@ArthurHENIN
April 2019
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SVP aidez moi :,-( c'est pour demain MERCI D'AVANCE
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Bonjour,
30min = 1/2heure
20 min = 1/3heure
apres un temps t (en minutes)
1erecuve t/30
2eme cuve t/20
t/20 + t/30 = 1(la contenance totale)
(3t+2t)/60 = 1
5t/60 = 1
t = 60/5 = 12
les 2 robinets ensemble mettent 12min
2 votes
Thanks 1
ArthurHENIN
MERCI <3
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4 petits calculs pour demain, aidez moi svp !
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Verified answer
Bonjour,30min = 1/2heure
20 min = 1/3heure
apres un temps t (en minutes)
1erecuve t/30
2eme cuve t/20
t/20 + t/30 = 1(la contenance totale)
(3t+2t)/60 = 1
5t/60 = 1
t = 60/5 = 12
les 2 robinets ensemble mettent 12min