a) Zamalowano 8 figur z 18:
[tex]\dfrac{8}{18}\cdot100\%= \dfrac{4}{9}\cdot100\%= \dfrac{400}{9}\%= \boxed{44\frac{4}{9}\%}[/tex]
b) Zamalowano 11 figur z 24:
[tex]\dfrac{11}{24}\cdot100\%= \dfrac{1100}{24}\%=\dfrac{275}{6}\%= \boxed{45\dfrac{5}{6}\%}[/tex]
c) Zamalowano 13 figur z 16:
[tex]\dfrac{13}{16}\cdot100\%= \dfrac{1300}{16}\%= \dfrac{325}{4}\%= \boxed{81\dfrac{1}{4}\%}[/tex]