document.write( "Question 272808: An automobile radiator is full of a 20% antifreeze solution. If its capacity is 12 quarts, how many quarts must be replaced by a 95% solution to give 12 quarts of a 70% solution? \n" ); document.write( "
Algebra.Com's Answer #199551 by ankor@dixie-net.com(22740)\"\" \"About 
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An automobile radiator is full of a 20% antifreeze solution.
\n" ); document.write( " If its capacity is 12 quarts, how many quarts must be replaced by a 95% solution to give 12 quarts of a 70% solution?
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\n" ); document.write( "Let x = amt to be replaced
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\n" ); document.write( ".20(12-x) + .95x = .70(12)
\n" ); document.write( "2.4 - .2x + .95x = 8.4
\n" ); document.write( "-.2x + .95x = 8.4 - 2.4
\n" ); document.write( ".75x = 6
\n" ); document.write( "x = \"6%2F.75\"
\n" ); document.write( "x = 8 qts of 20% solution removed and 8 qts of 95% solution to be added
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