Répondre :
V T L D M E R Da
x x x x-100 x-100 x+100 x+300 3x
Total 10x+200
donc 11100=10x+200 <=> 10x=10900 <=>x=1090km
V T L D M E R Da
1090 1090 1090 990 990 1190 1390 3270
V T L D M E R Da
x x x x-100 x-100 x+100 x+300 3x
Total 10x+200
donc 11100=10x+200 <=> 10x=10900 <=>x=1090km
V T L D M E R Da
1090 1090 1090 990 990 1190 1390 3270