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O banca acorda dobanda de 10% pe an. ce suma de bani a depus initial Flavius, daca dupa un an are in cont 1210 lei? .. Va rooog. urgent

Răspuns :

1210lei_______________110%
x____________________100%

x=1210x100/110=1100lei
1210.....110%
  x.......100%

x= 1210*100/110=1100 lei