Răspuns :
fiecare fiu primeste cate 10 lei. a 9-a parte 90:9=10; a8-a parte 10; a 7-a parte 10lei EGALITATE
90:9=10(Mircea)
90-10=80lei (a ramas)
80:8=10 (Ioan)
90-10-10=70lei (au ramas)
70:7=10 (Andrei)
90-10-10-10=60lei (mai are tata)
90-10=80lei (a ramas)
80:8=10 (Ioan)
90-10-10=70lei (au ramas)
70:7=10 (Andrei)
90-10-10-10=60lei (mai are tata)