1rac=2 rame
1 rama=paianjen+3
1 paianjen=lipitoare-18⇒lipit=paianj+18
2paianj+2lipit=64⇒2paianj+2(paianj+18)=64
2paianj+2paianj+36=64
4paianj=64-36
4paianj=28⇒1paianj=7ani
1 rama=paianj+3=7+3=10 ani
1 rac=2 rame=2 ori 10=20 ani
1 lipit=paianj+18=7+18=25 ani