Question

daca se aseaza cate 3 elevi intr-o banca raman 5 banci libere,iar daca se asaza cate 2 elevi in banca raman 5 elevi in picioare.
Cati elevi si cate banci sunt?

Answer 1

x=nr banci
3(x-5)=2x+5
3x-15=2x+5
x=20 banci
2*20+5=45 elevi