document.write( "Question 747806: HOW MUCH WATER DO I ADD TO MAKE A 10% SOLVENT INTO A .5% SOLVENT? \n" ); document.write( "

Algebra.Com's Answer #455146 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
Let $\"+w+\"$ = units of water to be added
\n" ); document.write( "Suppose you have $\"+10+\"$ units of 10% solvent to start with ( plug in your own number )
\n" ); document.write( " $\"+.1%2A10+=+1+\"$ unit of solvent to start with
\n" ); document.write( " $\"+1+%2F+%28+w+%2B+10+%29+=+.005+\"$
\n" ); document.write( " $\"+1+=+.005%2A%28+w+%2B+10+%29+\"$
\n" ); document.write( " $\"+1+=+.005w+%2B+.05+\"$
\n" ); document.write( " $\"+.005w+=+.95+\"$
\n" ); document.write( " $\"+w+=+190+\"$
\n" ); document.write( "190 units of water need to be added
\n" ); document.write( "hope this helps\r
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