document.write( "Question 460415: I have problems on knowing where to start on story problems and what to do with them. Here is an example.\r
\n" ); document.write( "\n" ); document.write( "How much pure acid must be mixed with 80 liters of 10% acid to get 30% acid?
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Algebra.Com's Answer #315784 by richwmiller(17219)\"\" \"About 
You can put this solution on YOUR website!
from the view of acid
\n" ); document.write( "x+ .1*80=.30(x+80)
\n" ); document.write( "x=22.8571
\n" ); document.write( "from the view of water
\n" ); document.write( ".9*80=.7*(x+80)
\n" ); document.write( "x=22.8571
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