document.write( "Question 1133639: A radiator contains 10 quarts of fluid, 25% of which is antifreeze. How much fluid should be drained and replaced with a fluid that is 90% antifreeze so that the resulting mixture is 45% antifreeze? Give both the exact answer and a decimal approximation, rounded to two decimal places. Be sure to include appropriate
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Algebra.Com's Answer #750901 by josgarithmetic(39618)\"\" \"About 
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v, the volume to remove and replace, in quarts of volume.\r
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\n" ); document.write( "\n" ); document.write( "\"%280.25%2A10-0.25v%2B0.9v%29%2F10=0.45\"
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