bonjour
effectif total = 24 + 30 + 20 + 35 = 109
effectif garçons = 109 * 0.75 = 81.75 / = 82
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bonjour
effectif total = 24 + 30 + 20 + 35 = 109
effectif garçons = 109 * 0.75 = 81.75 / = 82