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Mathematics, 13.12.2020 22:40 spellsaltoniza

Bonsir je n'ai pas compris deux question pouvez vous m'aider svp j'en ai besoin pour lundi 14 décembre 2020 si oui. Ce sont deux exercice mise en équation 1- La somme des âges de Marie , de sa mère et de sa grand'mère est 90 ans .La grand mère à le double de la mère et l'Age de Marie est le tiers de celui de sa mère . Quel est l'âge de chacune ?

2- Pierre dit : " Il y a 10 ans , j'avais la moitié de l'âge que j'aurai dans 10 ans. Quel est l'âge de Pierre ?

Merci bien de vouloir m'aider sur ce bonne soirée !

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