document.write( "Question 690824: How much water was evaporated from 7L of a 52% salt solution to produce a solution that was 91% salt? \n" ); document.write( "

Algebra.Com's Answer #426396 by josmiceli(19441) $\"\"$ $\"About$

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How much salt is in the original solution?
\n" ); document.write( " $\"+.52%2A7+=+3.64+\"$ liters
\n" ); document.write( "Let $\"+w+\"$ = liters of water that was evaporated
\n" ); document.write( " $\"+3.64+%2F+%28+7+-+w+%29+=+.91+\"$
\n" ); document.write( " $\"+3.64+=+.91%2A%28+7+-+w+%29+\"$
\n" ); document.write( " $\"+3.64+=+6.37+-+.91w+\"$
\n" ); document.write( " $\"+.91w+=+6.37+-+3.64+\"$
\n" ); document.write( " $\"+.91w+=+2.73+\"$
\n" ); document.write( " $\"+w+=+2.73+%2F+.91+\"$
\n" ); document.write( " $\"+w+=+3+\"$
\n" ); document.write( "3 liters of water must be evaporated
\n" ); document.write( "check:
\n" ); document.write( " $\"+3.64+%2F+%28+7+-+w+%29+=+.91+\"$
\n" ); document.write( " $\"+3.64+%2F+%28+7+-+3+%29+=+.91+\"$
\n" ); document.write( " $\"+3.64+%2F+4+=+.91+\"$
\n" ); document.write( " $\"+3.64+=+.91%2A4+\"$
\n" ); document.write( " $\"+3.64+=+3.64+\"$
\n" ); document.write( "OK
\n" ); document.write( " \n" ); document.write( "

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