Răspuns:
primul an|...........|
al doilea |............|.....|5
in total 19 diplome
egalam segmentele
19-5=14
aflam cate diplome a optinut in primul an:
14:2=7 diplome
aflam cate diplome a obtinut in al doilea an:
7+5=12
v:12+7=19 diplome