document.write( "Question 64610: How much water must be evaporated from 32 ounces of a 4% salt solution to make a 7% salt solution? \n" ); document.write( "
Algebra.Com's Answer #45189 by ptaylor(2198)\"\" \"About 
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Let x=amount of water to be evaporated.\r
\n" ); document.write( "\n" ); document.write( "Now we know that the amount of pure salt remains the same before(32)(0.04) and after (32-x)(0.07) the evaporation process. Thus, our equation to solve is:\r
\n" ); document.write( "\n" ); document.write( "(32-x)(0.07)=(32)(0.04) simplifying
\n" ); document.write( "-0.07x+2.24=1.28 subtract 2.24 from both sides and we have:
\n" ); document.write( "-0.07x=-0.96
\n" ); document.write( "x=13.71 oz \r
\n" ); document.write( "\n" ); document.write( "ck
\n" ); document.write( "(32-13.71)(0.07)=(32)(0.04)
\n" ); document.write( "1.28=1.28\r
\n" ); document.write( "\n" ); document.write( "Hope this helps. Happy holidays.------ptaylor\r
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