30% * 50 = 15
Donc 30% de 50kg valent 15kg
50 * 30% = 50 * 30/100 = 50 * 0.3 = 15
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30% * 50 = 15
Donc 30% de 50kg valent 15kg
50 * 30% = 50 * 30/100 = 50 * 0.3 = 15