document.write( "Question 839446: Sam mixed 91 mL of a acidic solution with 7 mL of a 58% acidic solution, to make a 37% acidic solution. Find the percent acid concentration of the first solution. \n" ); document.write( "

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Sam mixed 91 mL of a acidic solution with 7 mL of a 58% acidic solution, to make a 37% acidic solution.
\n" ); document.write( " Find the percent acid concentration of the first solution.
\n" ); document.write( ":
\n" ); document.write( "Let x = the percent (in decmals) of the 1st solution
\n" ); document.write( "91x + .58(7) = .37(98)
\n" ); document.write( "91x + 4.06 = 36.26
\n" ); document.write( "91x = 36.26 - 4.06
\n" ); document.write( "91x = 32.2
\n" ); document.write( "x = 32.2/91
\n" ); document.write( "x = .354 which is a 35.4% 1st solution \n" ); document.write( "

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