Answer:
The percentage of blue beads on Roxanne's necklace is;
[tex]60\text{\%}[/tex]Explanation:
Given that 3 out of 5 beads on the necklace are blue.
The fraction of blue beads is;
[tex]b=\frac{3}{5}[/tex]The percentage of blue beads will be equal to the product of the fraction of blue beads and 100%.
[tex]\begin{gathered} P_b=b\times100\text{\%} \\ P_b=\frac{3}{5}\times100\text{\%} \\ P_b=60\text{\%} \end{gathered}[/tex]Therefore, the percentage of blue beads on Roxanne's necklace is;
[tex]60\text{\%}[/tex]