When we make decimals of all the fractions, we would get the following:
[tex] \frac{2}{5} = 0.4[/tex]
[tex] \frac{6}{10} = 0.6[/tex]
[tex] \frac{8}{20} = 0.4[/tex]
[tex] \frac{12}{30} = 0.4[/tex]
As you can see, all the numbers equal 0.4, with the exception of 6/10. Hence, the number with the other ratio is 6/10.
