document.write( "Question 803228: How to change a 50% solution of magnesium sulfate to a 20% solution. Mag sulfate 1G/2ml. \n" ); document.write( "

Algebra.Com's Answer #484191 by josmiceli(19441) $\"\"$ $\"About$

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In other words, how much solvent to add?
\n" ); document.write( "The amount of Mag Sulfate does not change
\n" ); document.write( "I will say I have $\"+x+\"$ ml to start with
\n" ); document.write( "Let $\"+y+\"$ = ml of solvent to be added
\n" ); document.write( " $\"+.5x+%2F+%28+x+%2B+y+%29+=+.2+\"$
\n" ); document.write( " $\"+.5x+=+.2%2A%28+x+%2B+y+%29+\"$
\n" ); document.write( " $\"+.5x+=+.2x+%2B+.2y+\"$
\n" ); document.write( " $\"+.2y+=+.5x+-+.2x+\"$
\n" ); document.write( " $\"+.2y+=+.3x+\"$
\n" ); document.write( " $\"+y+=+%283%2F2%29%2Ax+\"$
\n" ); document.write( "Add 1 and 1/2 times as much solvent as the
\n" ); document.write( "ml of total solution you started with
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