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2014-10-05T19:12:41+02:00
9/10 = 0.9  = 90%
39/50 = 0.78  = 78%
28/400 = 0.07 = 7 %
0.6 = 60%
0.09 = 9%

Il y a 4% d'amande
Et 30 % de sucre
la tablette contient 150 g .

150 x 4% = 150x 4/100 =  6
masse d amande 6

150 x 30% = 150 x 30/100 = 45
masse de sucre 45