The numbers to order are
[tex]\frac{5}{10},0.8,\frac{3}{10}\text{ and 0.1}[/tex]
Let us convert all to decimal to enable us know the least and the greatest. Therefore,
[tex]\begin{gathered} \frac{5}{10}=\frac{1}{2}=0.5 \\ 0.8 \\ \frac{3}{10}=0.3 \\ 0.1 \end{gathered}[/tex]
From least to greatest wil be
[tex]0.1,\frac{3}{10},\frac{5}{10},0.8[/tex]
The answer is B.
