The benchmark of a fraction a/b is 1/b. Then, for the given:
To find the equivalent percent: find the a/b of 100 :
6/10:
[tex]\frac{6}{10}\cdot100=60[/tex]___________________
2/4:
[tex]\frac{2}{4}\cdot100=50[/tex]___________________
4/5:
[tex]\frac{4}{5}\cdot100=80[/tex]