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cuburi 20
Ana are o doime
George are doua patrimi


Răspuns :

1)Cate cuburi are Ana ?
20:2=10
2)Cate cuburi are Geroge ?
20:4x2=10

Verificare : 
10+10=20

Raspuns : 

Ana-10
George-10

ana: 20:2x1=10         george:20:4x2=10