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x% din 160 = 128
x= ?


Răspuns :

[tex]x\% \times 160 = 128[/tex]

[tex] \frac{x}{100} \times 160 = 128[/tex]

[tex] \frac{x}{10} \times 16 = 128[/tex]

[tex] \frac{x}{10} = \frac{128}{16} [/tex]

[tex] \frac{x}{10} = 8[/tex]

[tex]x = 8 \times 10[/tex]

[tex]x = 80[/tex]

Verificare:

[tex] \frac{80}{100} \times 160 = 0.8 \times 160 = 128[/tex]