I-------I-------I-------I-------I 4segmente
I-------I-------I-------I 3 segmente
I 240I diferenta intre nr elevilor =1 segment
240x4=960 elevi scoala 1
240x3=720 elevi scoala2
prin ecuatie
a=nr elevi scoala 1
b=nr elevi scoala 2
a/2=2b/3 3a=4b b=3a/4
a=b+240
a=3a/4+240
4a=3a+960
a=960 elevi scoala 1
b=960-240=720 elevi scoala 2