Răspuns:
Explicație pas cu pas:
9+5=14 km ( a doua zi)
14-3=11 (a treia zi )
9+14+11=34 km ( in total )
a doua zi
19 km+5km egal 24km
cat a parcurs in a 3 zi
24km -3km egal 21 km
cat a parcurs in total
19km +24km+21 km=64 km
