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ion si maria au 100 de nuci impreuna.Stiind ca ion are de 4 ori mai multe nuci . Cate nuci au fiecare

Răspuns :

20(Maria) si 80(Ion) .
x+4x=100
5x=100
x=20. 
Maria are x nuci, iar Ion are 4x nuci
Maria are 20 nuci, iar Ion are 80 de nuci.
I+M=100 mici
M=100:4=25
I=100-25
I=75