Answer:
16 posters hung by Brett
Step-by-step explanation:
Total number of posters = 30
Number of posters hung by George = [tex]\frac{1}{5}(30)=6[/tex]
Remaining number of posters = [tex]30-6=24[/tex]
Number of posters hung by Daniela = [tex]\frac{1}{3}(24)=8[/tex]
Number of posters hung by Brett = [tex]30-6-8=16[/tex]