Răspuns :
a+b+c=700
a+b=513=>c=700-513=187
b+c=462=>a=700-462=238
=>b=700-425=275
a+b=513=>c=700-513=187
b+c=462=>a=700-462=238
=>b=700-425=275
700-513=187km in a 3 zi 700-462=238km in prima zi 700-187-238=275 km in a doua zi