Ana rezolva corect 20% din cele 20 de exercitii ale unui test. Cate exercitii a gresit Ana?
Vrg repedeeeeeeee!!!!!


Răspuns :

[tex]20\%din20 = \frac{20}{100} \times 20 = \frac{400}{100} = 4[/tex]

[tex]20 - 4 = 16 \: exerciti \: gresite[/tex]