document.write( "Question 958833: Jennifer needs to make a solution that is 10% hydrochloric acid. If she must use all of the 50 mL of 20% hydrochloric acid she started with, then how much water needs to be mixed with the original solution?
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Algebra.Com's Answer #586009 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
Let $\"+x+\"$ = ml pf water to be added
\n" ); document.write( " $\"+.2%2A50+=+10+\"$ ml of HCL in 20% solution
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\n" ); document.write( " $\"+10+%2F+%28+x+%2B+50+%29+=+.1+\"$
\n" ); document.write( " $\"+10+=+.1%2A%28+x+%2B+50+%29+\"$
\n" ); document.write( " $\"+10+=+.1x+%2B+5+\"$
\n" ); document.write( " $\"+.1x+=+5+\"$
\n" ); document.write( " $\"+x+=+50+\"$
\n" ); document.write( "50 ml of water needs to be added
\n" ); document.write( "check:
\n" ); document.write( " $\"+10+%2F+%28+x+%2B+50+%29+=+.1+\"$
\n" ); document.write( " $\"+10+%2F+%28+50+%2B+50+%29+=+.1+\"$
\n" ); document.write( " $\"+10%2F100+=+.1+\"$
\n" ); document.write( " $\"+.1+=+.1+\"$
\n" ); document.write( "OK
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