SOLUTION: I really hate word problems. I can't even tell where they belong. If I shouldn't be here can someone tell me where I should be? Thanks. The function f(x)=180x/100-x models the cos

Question 453324: I really hate word problems. I can't even tell where they belong. If I shouldn't be here can someone tell me where I should be? Thanks.
The function f(x)=180x/100-x models the cost f(x) in millions of dollars to remove x% of a rivers pollutants. If the government commits $540 million for this project
what is the percentage of pollutants that can be removed?

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
The function f(x)=180x/(100-x) models the cost f(x) in millions of dollars to remove x% of a rivers pollutants.
If the government commits $540 million for this project
what is the percentage of pollutants that can be removed?
-----
540 = (180x)/(100-x)
---
Cross multiply to get:
54000-540x = 180x
-----
720x = 54000
x = 75
-----
75% of the pollutants can be removed.
===============
Cheers,
Stan H.

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