bonjour
a) 12 500 x 0.78 = 9 750
b ) 1.68 x 1.195 = 2.0076
c) 125 000 x0 .97 = 121 250
d) 1 480 x 1.02 = 1509.6
a) 1.055 x = 6.5
x = 6.1611.....
b ) 1.07 x = 142
x = 132.71.....
c) 0.85 x = 62
x = 72.94....
a ) 21.75 - 15 = 6.75
6.75 /21.75 = 0.3103....
augmentation de 31.03 %
b ) 2.12 - 1.88 = 0.24
0.24 / 2.12 = 0.1132....
environ - 11 .3 %
Explications étape par étape :
