Bonjour
Soit x les voitures vertes
ON a:
vertes= x
rouges = 3x
blanches = 4x
bleues = 2x
x +3x +4x +2x = 250
10x = 250
x = 25
tu as 25 vertes
3 x25 = 75 rouges
4x25 = 100 blanches
2x 25 = 50 = 50 bleues
Soit x les assiettes
tasses = x/2
verres = x/2 +8
Tu as
x + x/2 +x/2 +8 = 56
2x +x +x +16 = 112
4x = 112 -16
4x = 96
x = 24
tu as 24 assiettes, 12 tasses et 20 verres = 56