document.write( "Question 337439: How much water must be added to 20 liters of 50% antifreeze solution to reduce it to 40% antifreeze? \n" ); document.write( "
Algebra.Com's Answer #241907 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
Let A be the amount of 0% antifreeze (pure water).
\n" ); document.write( "\"50%2820%29%2B0%28A%29=40%2820%2BA%29\"
\n" ); document.write( "\"1000=800%2B40A\"
\n" ); document.write( "\"40A=200\"
\n" ); document.write( "\"A=5\" liters
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