46
a
x 5% = x 5 : 100 => R3
b
12% de 150 = 12 : 100 x 150 = 18 => R1
c
prix initial - remise 10% = prix final
soit
40 - 40 x 10% = 36 => R2
d
prix initial + augmentation = prix final
=> augmentation = prix final - prix initial = 0,70 - 0,68 = 0,02
l'augmentation 0,68 x taux = 0,02
=> R3
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46
a
x 5% = x 5 : 100 => R3
b
12% de 150 = 12 : 100 x 150 = 18 => R1
c
prix initial - remise 10% = prix final
soit
40 - 40 x 10% = 36 => R2
d
prix initial + augmentation = prix final
=> augmentation = prix final - prix initial = 0,70 - 0,68 = 0,02
l'augmentation 0,68 x taux = 0,02
=> R3