Ahealth department estimates that 12 vials of malaria serum will treat 150 people. at this rate, how many vials are required to treat 225 people?

Step-by-step explanation: The proportion would be -

12 / 150 = x / 225.

That is, 12 per 150, x amount per 225

To solve this proportion, you can cross multiply (multiply the values diagonally) -

12 / 150 = x /225

150x = 12(225)

150x = 2700

x = 18

18 vials are required to treat 225 people.

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step-by-step explanation:

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btw in my country we just have sun and rain as (because i live in the caribbean lol)

also, thx a lot for the points : )