document.write( "Question 819911: How many liters of pure alcohol must be added to 10 liters of a 30% solution to obtain an 80% solution? \n" ); document.write( "
Algebra.Com's Answer #493268 by josgarithmetic(39618)\"\" \"About 
You can put this solution on YOUR website!
Simple two-part mixture problem that goes like this:\r
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\n" ); document.write( "\n" ); document.write( "Let u = amount of pure alcohol to add.
\n" ); document.write( "\"%2810%2A30%2Bu%2A100%29%2F%2810%2Bu%29=80\"
\n" ); document.write( "Solve for u.
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