/___/ prima zi
/___/+70 a doua zi
/___/+70+20 a treia zi
In total 1300 km
Egalam suma segmentelor
1300-(70+70+20)=1300-160=1140km
1+1+1= 3 segmente egale
1140:3=380 un segment ( prima zi)
380+70=450 a doua zi
380+70+20=470 a treia zi
Verificare 380+450+470=1300