document.write( "Question 835284: Anne had two solutions that contain 20% citric acid and 45% citric acid. How many liters of each solution must she mix to produce 20 liters of a 30% citric acid solution? \n" ); document.write( "
Algebra.Com's Answer #503431 by josgarithmetic(39620)\"\" \"About 
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u = volume of 20%
\n" ); document.write( "v = volume of 45%\r
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\n" ); document.write( "\n" ); document.write( "\"%2820u%2B45v%29%2F20=30\" and \"u%2Bv=20\"
\n" ); document.write( "Solve for u and v.\r
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\n" ); document.write( "\n" ); document.write( "How those are formed, found in the lesson, \"Mixing two concentrations for known amount of mixture\"
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