1. A health department estimates that 8 vials of malaria serum will treat 100 people. At this rate, how many vials are required to treat 250 people? Write your answer as a complete sentence.
20 vials are require to treat 250 people as 8is needed for 100 people so if you double that to make it 200 you get 16 vials and divide 100 by 2 to make 50 gives you 4 vials.
