Răspuns:
48 km, 32 km, 40 km
Explicație pas cu pas:
x= distanta parcursa in prima zi
y= distanta parcursa in a 2a zi
z= distanta parcursa in a 3a zi
x+ y+z= 120 km
y= 2/3 × x
z= x- 8
x+ 2/3× x + (x- 8)= 120
2x + 2/3 × x - 8= 120 | ×3
6x + 2x - 24= 360
8x= 360+ 24= 384
x= 48 km
y= 2/3 × 48= 32 km
z= 48-8= 40 km
