Maria+2+Andrei+2+Vlad+2=45
Acum aflam cati ani au in prezent:Maria+Andrei+Vlad=45-2X3=45-6=39
M |______|
A |______|_______|_______|
V|_______|______|_______|_______|_______|_______|_______|______|_____|
Maria=39:13 (13=numarul segmente)
Maria=3
Andrei=3X3=9
Vlad=3X9=27