document.write( "Question 495970: how many quarts of pure antifreeze must be added to 2 quarts of a 10% antifreeze to obtain 20% antifreeze solution \n" ); document.write( "

Algebra.Com's Answer #336280 by nerdybill(7384) $\"\"$ $\"About$

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how many quarts of pure antifreeze must be added to 2 quarts of a 10% antifreeze to obtain 20% antifreeze solution
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\n" ); document.write( "Let x = amount (quarts) of pure antifreeze to add
\n" ); document.write( "then
\n" ); document.write( "x + .10(2) = .20(x+2)
\n" ); document.write( "x + .20 = .20x+.40
\n" ); document.write( ".80x + .20 = .40
\n" ); document.write( ".80x = .20
\n" ); document.write( "x = 0.25 quarts
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