Answer:
→Number of people in the fitness club= 36 People
→Number of people who lifted weights [tex]=\frac{3}{8}\times 36=\frac{108}{8}[/tex]
→Number of people who did cross training [tex]=\frac{1}{3}\times 36=12[/tex]
=12 People
→Number of people who were running
[tex]=1-\frac{3}{8}-\frac{1}{3}\\\\=\frac{24-9-8}{24}\\\\=\frac{7}{24}[/tex]