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OpenStudy (anonymous):
Help please :)
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OpenStudy (anonymous):
OpenStudy (pfenn1):
Let x = gallons of 20% solution, then 120-x= gallons of 50% solution.\[0.20x+0.50(120-x)=0.40(120)\]Solve for x.
OpenStudy (anonymous):
-40?
OpenStudy (pfenn1):
I got +40.
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