Answer :
Let's show this by setting it up:
[tex]8\ vials\ per\ 100\ people = \frac{8\ vials}{100\ people}\\ \frac{8}{100}=\frac{x}{175\ people}\\ 8*175=x*100\\ 1400=100x\\ x=\frac{1400}{100}=14[/tex]
So yes, you will need 14 vials of serum to cure 175 people.
[tex]8\ vials\ per\ 100\ people = \frac{8\ vials}{100\ people}\\ \frac{8}{100}=\frac{x}{175\ people}\\ 8*175=x*100\\ 1400=100x\\ x=\frac{1400}{100}=14[/tex]
So yes, you will need 14 vials of serum to cure 175 people.