document.write( "Question 1091799: Problem Solving
\n" ); document.write( "How many liters of a 20% solution should be added to a 450 L solution which contains 35% alcohol so that the resulting mixture will be 30% alcohol? With solution?
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Algebra.Com's Answer #706314 by jorel1380(3719)\"\" \"About 
You can put this solution on YOUR website!
Let n be the amount of 20% solution. Then:
\n" ); document.write( "0.2n + 0.35(450)=0.30(n+450)
\n" ); document.write( "0.1n=22.5
\n" ); document.write( "n=225 liters of 20% solution
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