Răspuns :
a+b=4728
b=ax2
ax2+a=4728
3a=4728
a=4728:3
a=1576(bilete in prima luna)
b=1576x2
b=3152(bilete in a doua luna)
proba:1576+3152=4728
b=ax2
ax2+a=4728
3a=4728
a=4728:3
a=1576(bilete in prima luna)
b=1576x2
b=3152(bilete in a doua luna)
proba:1576+3152=4728