Answer:
[tex]\frac{3}{10}[/tex] are wearing blue shirts
Step-by-step explanation:
purple = [tex]\frac{2}{5}[/tex] = [tex]\frac{4}{10}[/tex]
gold = [tex]\frac{3}{10}[/tex]
[tex]\frac{4}{10}[/tex] + [tex]\frac{3}{10}[/tex] = [tex]\frac{7}{10}[/tex]
1 - [tex]\frac{7}{10}[/tex] = [tex]\frac{3}{10}[/tex]
