document.write( "Question 976071: what quantity of water should be taken out to concentrate 65 litres of 54% acidic liquid to 78% acidic liquid \n" ); document.write( "

Algebra.Com's Answer #597720 by josmiceli(19441) $\"\"$ $\"About$

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Let $\"+w+\"$ = liters of water to be removed
\n" ); document.write( " $\"+.54%2A65+=+35.1+\"$ liters of acid in 54% solution
\n" ); document.write( "--------------------
\n" ); document.write( " $\"+35.1+%2F+%28+65+-+w+%29+=+.78+\"$
\n" ); document.write( " $\"+35.1+=+.78%2A%28+65+-+w+%29+\"$
\n" ); document.write( " $\"+35.1+=+50.7+-+.78w+\"$
\n" ); document.write( " $\"+.78w+=+50.7+-+35.1+\"$
\n" ); document.write( " $\"+.78w+=+15.6+\"$
\n" ); document.write( " $\"+w+=+20+\"$
\n" ); document.write( "20 liters of water must be taken out
\n" ); document.write( "( note that no acid is taken out )\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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