document.write( "Question 982455: David needs to have a 20% solution of antifreeze and water in his radiator. If the radiator of truck contains 8 quarts of a solution of antifreeze and water, with 10% being antifreeze, how much antifreeze must be added to create the desired solution? \n" ); document.write( "
Algebra.Com's Answer #603275 by josgarithmetic(39617)\"\" \"About 
You can put this solution on YOUR website!
The description implies that the capacity of the radiator is greater, larger than 8 quarts.\r
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\n" ); document.write( "\n" ); document.write( "Has 10%; wants or needs 20%;\r
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\n" ); document.write( "\n" ); document.write( "Let v be amount of pure antifreeze to add.
\n" ); document.write( "\"%288%2A%280.1%29%2Bv%2A%281.0%29%29%2F%28v%2B8%29=0.2\", setup using decimal fractions instead of percents;\r
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\n" ); document.write( "\n" ); document.write( "\"%288%2B10v%29%2F%28v%2B8%29=2\", simply multiplied both sides by 10\r
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\n" ); document.write( "\n" ); document.write( "\"10v%2B8=2%28v%2B8%29\"
\n" ); document.write( "and again,...\r
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\n" ); document.write( "\n" ); document.write( "\"5v%2B4=v%2B8\"\r
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\n" ); document.write( "\n" ); document.write( "\"v%2B4=8\"\r
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\n" ); document.write( "\n" ); document.write( "\"highlight%28v=4%29\", how many quarts of pure antifreeze to add.
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