document.write( "Question 470853: what weight of water must be evaporated from 40lbs of a 20% salt solution to produce 50% solution? \n" ); document.write( "

Algebra.Com's Answer #322950 by lwsshak3(11628) $\"\"$ $\"About$

You can put this solution on YOUR website!
what weight of water must be evaporated from 40lbs of a 20% salt solution to produce 50% solution?
\n" ); document.write( "**
\n" ); document.write( "let x= lbs of water to be evaporated
\n" ); document.write( "amount of salt does not change, but solution has less water
\n" ); document.write( "20%*40=50%(40-x)
\n" ); document.write( "8=20-x/2
\n" ); document.write( "x/2=12
\n" ); document.write( "x=24
\n" ); document.write( "ans:
\n" ); document.write( "24 lbs of water must be evaporated to produce a 50% solution. \n" ); document.write( "

\n" );