PROPORTION ET POURCENTAGES

EXERCICE 1: A est unr partie de E, nA est l'effectif de A, nE est l'effectif E et p la proportion de A dans E.

1) On donne nA = 1 843 et nE = 3 800. Calculer p.

2) On donne p = 0.375 et nE = 240. Calculer nA.

3) On donne nA = 200 et p = 0.625. Calculer nE.

EXERCICE 2:

Merci.

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