document.write( "Question 1053884: You need a 10% alcohol solution. On hand, you have a 130 mL of a 85% alcohol mixture. How much pure water will you need to add to obtain the desired solution?\r
\n" ); document.write( "\n" ); document.write( "This is what I have done.\r
\n" ); document.write( "\n" ); document.write( " 130(.85)+x=130+x(.10)\r
\n" ); document.write( "\n" ); document.write( " 110.5+x=13+x\r
\n" ); document.write( "\n" ); document.write( "-13 -x -13 -x\r
\n" ); document.write( "\n" ); document.write( "97.5=x \n" ); document.write( "
Algebra.Com's Answer #669059 by macston(5194)\"\" \"About 
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\n" ); document.write( "Find the amount of alcohol you have.
\n" ); document.write( "x=amount of alcohol
\n" ); document.write( ".
\n" ); document.write( "0.85(130)=x
\n" ); document.write( "110.5=x
\n" ); document.write( ".
\n" ); document.write( "y=total 10% solution:
\n" ); document.write( "0.10(y)=110.5
\n" ); document.write( "y=110.5/0.1
\n" ); document.write( "y=1105
\n" ); document.write( "The total amount of 10% solution you can make is 1105 ml.
\n" ); document.write( ".
\n" ); document.write( "Of the 1105 ml, 130 ml is the original 85% solution.
\n" ); document.write( "So the amount of water to add:
\n" ); document.write( "1105 ml - 130 ml = 975 ml
\n" ); document.write( "You should add 975 ml water.
\n" ); document.write( ".
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