document.write( "Question 529818: A tank contains 20 gallons of antifreeze solution.  When it is full, it contains 15% antifreeze.  How many gallons must be replaced by an 80% antifreeze solution to get 20 \n" ); document.write( "
Algebra.Com's Answer #349757 by stanbon(75887)\"\" \"About 
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A tank contains 20 gallons of antifreeze solution. When it is full, it contains 15% antifreeze. How many gallons must be replaced by an 80% antifreeze solution to get 20
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\n" ); document.write( "Equation:
\n" ); document.write( "alcohol - alcohol + alcohol = alcohol
\n" ); document.write( "0.15*20 - 0.15x + 0.80x = ?*20
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\n" ); document.write( "You post does not state the % of alcohol in the final solution.
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\n" ); document.write( "cheers,
\n" ); document.write( "Stan H.
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