x=distanta totala pe care o are de parcurs
3x/11=parcurge in prima zi
x-3x/11=8x/11 - restul
3/8*8x/11=24x/88 - distanta de a doua zi
8x/11-24/88=40x/88=5x/11 - noul rest
3/5*5x/11=15x/55 - distanta de a treia zi
5x/11-15x/55=10x/55=2x/11 - a patra zi
2x/11=28
2x=11*28
2x=308
x=308/2
x=154
Drumul are 154 km.
Prima zi: 3*154/11=42 km
A doua zi: 24*154/88=42 km
A treia zi: 15*154/55=42 km
A patra zi: 28 km