Sc1+Sc2+Sc3=190 elevi
Sc1 /__/__/
Sc2/__/
Sc3/__/__/.+40../
Egalam segmentele:
190-40=150(5 segm eg)
1.Cat e 1 segm sau cati elevi au venit din Sc2?
150:5=30 elevi
2.Cati elevi au venit din Sc1?
30×2=60 elevi
3.Cati elevi au venit de la Sc3?
30×2+40=60+40=100 elevi
Verificare:
60+30+100=190