document.write( "Question 10912: This word problem has me stumped. Can you help?
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document.write( "How much water must be evaporated from 240 gallons of a 3% salt solution to
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document.write( "produce a 5% salt solution? \n" );
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Algebra.Com's Answer #5734 by rapaljer(4671)![]() ![]() You can put this solution on YOUR website! Let x= number of gallons to be evaporated (removed) from the solution.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "240 = no of gallons to begin with at 3% \n" ); document.write( "-x = no of gallons to evaporate at 0% \n" ); document.write( "240-x = no of gallons to end up with at 5%\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Equation: \n" ); document.write( ".03(240) - 0(x) = .05(240-x) \n" ); document.write( "7.2 = 12 - .05x \n" ); document.write( "7.2 - 12 = 12- 12 - .05x\r \n" ); document.write( "\n" ); document.write( "-4.8 = -.05x\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( "Leaving behind 240-96 = 144 gallons\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Check: \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "R^2 at SCC\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |