document.write( "Question 662306: A radiator contains 5 quarts of fluid, 30% of which is antifreeze. How much fluid should be drained and replaced with pure antifreeze so that the new mixture is 60% antifreeze? (Round your answer to two decimal places.) \n" ); document.write( "

Algebra.Com's Answer #412118 by josmiceli(19441) $\"\"$ $\"About$

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Let $\"+x+\"$ = quarts of fluid to be drained
\n" ); document.write( "and replaced with pure antifreeze
\n" ); document.write( " $\"+.3%2A5+=+1.5+\"$ quarts of antifreeze originally
\n" ); document.write( "------------
\n" ); document.write( " $\"+%28+1.5+-+.3x+%2B+x+%29+%2F+5+=++.6+\"$
\n" ); document.write( "Note that you started with 5 quarts and
\n" ); document.write( "ended with 5 quarts
\n" ); document.write( "-------------
\n" ); document.write( " $\"+%28+1.5+%2B+.7x+%29+%2F+5+=+.6+\"$
\n" ); document.write( " $\"+1.5+%2B+.7x+=+.6%2A5+\"$
\n" ); document.write( " $\"+1.5+%2B+.7x+=+3+\"$
\n" ); document.write( " $\"+.7x+=+1.5+\"$
\n" ); document.write( " $\"+x+=+2.14+\"$
\n" ); document.write( "2.14 quarts of fluid should be drained
\n" ); document.write( "and replaced with pure antifreeze \n" ); document.write( "

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