Bonjour,
a) 80 × 20/100 = 16
b) 80 - 80 × 15/100 = 68
80 × (100/100 - 15/100) = 68
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Bonjour,
a) 80 × 20/100 = 16
b) 80 - 80 × 15/100 = 68
80 × (100/100 - 15/100) = 68