document.write( "Question 1077881: A chemist has three different acid solutions. The first acid solution contains 25% acid, the second contains 40% and the third contains 85% . He wants to use all three solutions to obtain a mixture of 108 liters containing 45% acid, using 2 times as much of the 85% solution as the 40% solution. How many liters of each solution should be used?\r
\n" ); document.write( "\n" ); document.write( "The chemist should use _____ liters of 25% solution, _____ liters of 35% solution, and ____ liters of 75% solution.
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Algebra.Com's Answer #692411 by josgarithmetic(39618)\"\" \"About 
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The first acid solution contains 25% acid, the second contains 40% and the third contains 85% . He wants to use all three solutions to obtain a mixture of 108 liters containing 45% acid, using 2 times as much of the 85% solution as the 40% solution. How many liters of each solution should be used?
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\n" ); document.write( "\n" ); document.write( "x of 25%
\n" ); document.write( "y of 40%
\n" ); document.write( "z of 85%
\n" ); document.write( "\"z%2Fy=2\"\r
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\n" ); document.write( "\n" ); document.write( "-
\n" ); document.write( "Account for the pure acid
\n" ); document.write( "\"25x%2B40y%2B85%2A2y=108%2A45\"
\n" ); document.write( "\"5x%2B8y%2B17%2A2y=108%2A9\"
\n" ); document.write( "\"5x%2B8y%2B34y=972\"
\n" ); document.write( "\"5x%2B42y=972\"\r
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\n" ); document.write( "\n" ); document.write( "Account for the volume
\n" ); document.write( "\"x%2By%2B2y=108\"
\n" ); document.write( "\"x%2B3y=108\"\r
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\n" ); document.write( "\n" ); document.write( "Simpler system in two variables: \"system%285x%2B42y=972%2Cx%2B3y=108%29\"
\n" ); document.write( "Use five times the second equation and subtract from first equation.\r
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\n" ); document.write( "\n" ); document.write( "\"5x%2B42y-5x-15y=972-540\"
\n" ); document.write( "\"42y-15y=432\"
\n" ); document.write( "\"27y=432\"
\n" ); document.write( "\"highlight%28y=16%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"highlight%28x=60%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"highlight%28z=32%29\"\r
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\n" ); document.write( "\n" ); document.write( "-
\n" ); document.write( "60 liters of 25%
\n" ); document.write( "16 liters of 40%
\n" ); document.write( "32 liters of 85%
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