document.write( "Question 294472: Brine is a solution of salt water. If a tub contains 50 pounds of a 5% solution of brine, how much water must evaporate to change it to an 8% solution? \n" ); document.write( "
Algebra.Com's Answer #212321 by ankor@dixie-net.com(22740)\"\" \"About 
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Brine is a solution of salt water.
\n" ); document.write( " If a tub contains 50 pounds of a 5% solution of brine, how much water must
\n" ); document.write( " evaporate to change it to an 8% solution?
\n" ); document.write( ":
\n" ); document.write( "Let x = amt of water evaporated
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\n" ); document.write( ".05(50) = .08(50-x)
\n" ); document.write( "2.5 = 4 - .08x
\n" ); document.write( ".08x = 4 - 2.5
\n" ); document.write( ".08x = 1.5
\n" ); document.write( "x = \"1.5%2F.08\"
\n" ); document.write( "x = 18.75 lb of water evaporated
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\n" ); document.write( "Check; amt of salt remains the same, only the percentage is different, right?
\n" ); document.write( ".05(50) = .08(50-18.75)
\n" ); document.write( ".05(50) = .08(31.25)
\n" ); document.write( "2.5 = 2.5 \n" ); document.write( "
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