document.write( "Question 1026967: 7 qt of a saline solution was mixed with 4 qt of pure water to make 35% saline solution. Find the percent concentration of the first solution. \n" ); document.write( "

Algebra.Com's Answer #642245 by josmiceli(19441) $\"\"$ $\"About$

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Let $\"+x+\"$ = quarts of salt in original saline solution
\n" ); document.write( "After adding $\"+4+\"$ quarts of water:
\n" ); document.write( " $\"+x+%2F+%28+7+%2B+4+%29+=+.35+\"$
\n" ); document.write( " $\"+x+%2F+11+=+.35+\"$
\n" ); document.write( " $\"+x+=+3.85+\"$
\n" ); document.write( "--------------
\n" ); document.write( " $\"+x%2F7+=+3.85%2F7+\"$
\n" ); document.write( " $\"+x%2F7+=+.55+\"$
\n" ); document.write( "The concentration of the 1st solution in 55% \n" ); document.write( "

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