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If we could prevent 25% of disaster caused deaths, then we could save 0.25% of people who die each year!

If we could prevent 50% of deaths from disasters, then we could save 1.9% of people who die each year!

If we could prevent 75% of deaths from disasters, then we could save xxx of people who die each year!

what is xxx?

Guest Apr 1, 2018
edited by Guest  Apr 1, 2018
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Observe that the number of disaster-caused deaths prevented is doubled from the first statement to the second statement (25% > 50%) and the number of people saved per year goes from 0.25% to 1.9%. This means that doubling the deaths prevented results in the number of people saved multiplied by a factor of $${0.019\over0.0025}$$, or 7.6. As an equation, this is $$2d=7.6D$$, wherein d is the number of disaster-caused deaths prevented, and D is the number of total deaths prevented.

Now, observe that the number of disaster-caused deaths prevented is tripled from the first statement to the third statement. To find how much the number of total deaths prevented, we just need to manipulate the equation we derived earlier:

$${3\over2}*2d={3\over2}*7.6D$$

$$3d=11.4D$$

By tripling the number of disaster-caused deaths prevented, we multiply the number of total deaths prevented per year by 11.4. Now, since d tripled from the first statement to the third,  we must multiply 0.25% by 11.4. Doing this, we get 2.85% of deaths prevented each year.

(tbh i'm not very confident with this answer, but it was the best I could do)

Mathhemathh  Apr 1, 2018

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