Răspuns :
t- traseu
t-t/4=A unde A reprezinta restul
A-3A/5=18 /*5
5A-3A=90
2A=90
A=45
t-t/4=45 /*4
4t-t=180
3t=180
t=60 km are traseul
t-t/4=A unde A reprezinta restul
A-3A/5=18 /*5
5A-3A=90
2A=90
A=45
t-t/4=45 /*4
4t-t=180
3t=180
t=60 km are traseul
x=lungime traseu
x/4=etapa 1
x-x/4=3x/4=rest
3x/4 × 3/5=9x/20=etapa 2
x/4+9x/20+18=x
5x+9x+360=20x
6x=360
x=60 km
x/4=etapa 1
x-x/4=3x/4=rest
3x/4 × 3/5=9x/20=etapa 2
x/4+9x/20+18=x
5x+9x+360=20x
6x=360
x=60 km