document.write( "Question 852413: I cannot wrap my brain around word problems. Please help me!!\r
\n" ); document.write( "\n" ); document.write( "How much water must be evaporated from 16 oz of a 2% salt solution to make a 4% salt solution?\r
\n" ); document.write( "\n" ); document.write( "To obtain a solution that is 4% salt solution, ____ oz of water must be evaporated.\r
\n" ); document.write( "\n" ); document.write( "Thank you in advance
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Algebra.Com's Answer #513332 by josgarithmetic(39618)\"\" \"About 
You can put this solution on YOUR website!
Amount of salt will be the same before and after evaporation.\r
\n" ); document.write( "\n" ); document.write( "Amount of salt is 16*(0.02).\r
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\n" ); document.write( "\n" ); document.write( "Amount of salt solution at the beginning is 16 ounces. Most of this is water, and some of it is salt. The WATER WILL DECREASE THROUGH EVAPORATION. \r
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\n" ); document.write( "\n" ); document.write( "At start, fraction of the solution being salt is \"%2816%280.02%29%29%2F16=0.02\".\r
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\n" ); document.write( "\n" ); document.write( "After the needed evaporation, the numerator is unchanged, but the denominator must be decreased; and the resulting fraction must equal 0.04.\r
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\n" ); document.write( "\n" ); document.write( "From that, do you know what to do?
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