Question

3 carti si 3 stilouri costa 222 de lei. doua mingi si trei stilouri costa 174 de lei. afla cat costa fiecare obiect ,stiind ca o minge costa cat jumatate don pretul unei carti. urgentttttt ! va dau coroana

Answer 1

c=pret carte
s=pret stilou
m=pret minge

3c+3s=222   ⇒ c+s=74      s=74-c
2m+3s=174
m=c/2
2×c/2+3(74-c)=174
c+222-3c=174
2c=48
c=24 lei cartea
m=24/2=12 lei mingea
s=74-24=50 lei stiloul