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Estellebl0059
@Estellebl0059
April 2019
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Une somme d'argent S est partagées entre trois personnes: Alex recoit 7/20, Benoit le quart et Christophe le reste.
1° Quelle fraction de S revient à Christophe,
2° Alex a recu 210 euros. Calculer S
Merci pour l'aide
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mb50
Bonjour,
1) S= 1 - (7/20+1/4)
S= 20/20 - (7/20 + 5/20)
S= 20/20 - 13/20
S= 7/20
7/20 de la somme S revient à Christophe.
2) 1/20 =
?
7/20 = 210 ; 7/20 : 7 = 1/20 donc 210/7 = 30 => 1/20
1/20 = 30
20/20 = 30x 20 = 600
S = 600€
1 votes
Thanks 1
mb50
J'espère t'avoir aider, n'oublie pas de choisir la meilleur réponse pour regagner une partie de tes points :)
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1) S= 1 - (7/20+1/4)
S= 20/20 - (7/20 + 5/20)
S= 20/20 - 13/20
S= 7/20
7/20 de la somme S revient à Christophe.
2) 1/20 = ?
7/20 = 210 ; 7/20 : 7 = 1/20 donc 210/7 = 30 => 1/20
1/20 = 30
20/20 = 30x 20 = 600
S = 600€