document.write( "Question 961285: Hello, can you please answer it and show me step by step how to do it? Than you. \r
\n" ); document.write( "\n" ); document.write( "Fred mixed 9 ml of a salt solution with 12 ml of a 47% salt solution, to make a 41% salt solution. Find the percent salt concentration of the first solution.
\n" ); document.write( "

Algebra.Com's Answer #587454 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
Fred mixed 9 ml of a salt solution with 12 ml of a 47% salt solution, to make a 41% salt solution. Find the percent salt concentration of the first solution.
\n" ); document.write( "------------
\n" ); document.write( "Equation:
\n" ); document.write( "salt + salt = salt
\n" ); document.write( "(x/100)*9 + 0.47*12 = 0.41(9+12)
\n" ); document.write( "------
\n" ); document.write( "9x = 41*9 +41*12 - 47*12
\n" ); document.write( "9x = 41*9 - 6*12
\n" ); document.write( "9x = 297
\n" ); document.write( "x = 33% (percent salt in the first solution)
\n" ); document.write( "---------
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
\n" ); document.write( "
\n" );