document.write( "Question 911360: A radiator contains 15 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 45% antifreeze? (Round your answer to two decimal places.) \n" ); document.write( "
Algebra.Com's Answer #553055 by richwmiller(17219)\"\" \"About 
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0.3*15-0.3x+1x=0.45(15)
\n" ); document.write( "4.5+0.7x=6.75
\n" ); document.write( "0.7x=6.75-4.5
\n" ); document.write( "0.7x=2.25
\n" ); document.write( "x=3.21428571 rounded 3.21
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\n" ); document.write( "0.3*11.7857143+1*3.21428571=0.45(15)
\n" ); document.write( "3.53571429+3.21428571=6.75
\n" ); document.write( "6.75=6.75
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