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Afati numarul n daca 20% di el este 120

Răspuns :

x*20/100 =120
x =120*100/20 =600
[tex] \frac{20}{100} \times n = 120[/tex]

[tex] \frac{1}{5} \times n = 120[/tex]

[tex] \frac{1 \times n}{5} = 120[/tex]

[tex] \frac{n}{5} = 120[/tex]

[tex]n = 5 \times 120[/tex]

[tex]n = 600[/tex]