document.write( "Question 720619: How many liters of water must be added to 8 liters of a 40% salt solution to obtain a 10% salt solution? \n" ); document.write( "

Algebra.Com's Answer #441896 by josmiceli(19441) $\"\"$ $\"About$

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Let $\"+w+\"$ = liters of water to be added
\n" ); document.write( " $\"+.4%2A8+=+3.2+\"$ liters of salt in 40% solution
\n" ); document.write( "-----------
\n" ); document.write( " $\"+3.2+%2F+%28+8+%2B+w+%29+=+.1+\"$
\n" ); document.write( " $\"+3.2+=+.1%2A%28+8+%2B+w+%29+\"$
\n" ); document.write( " $\"+3.2+=+.8+%2B+.1w+\"$
\n" ); document.write( " $\"+.1w+=+2.4+\"$
\n" ); document.write( " $\"+w+=+24+\"$
\n" ); document.write( "24 liters of water must be added
\n" ); document.write( "check:
\n" ); document.write( " $\"+3.2+%2F+%28+8+%2B+24+%29+=+.1+\"$
\n" ); document.write( " $\"+3.2+%2F+32+=+.1+\"$
\n" ); document.write( " $\"+3.2+=+3.2+\"$
\n" ); document.write( "OK \n" ); document.write( "

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