document.write( "Question 962371: Can you please answer this problem thank you very much \r
\n" ); document.write( "\n" ); document.write( "Tim mixed 12 mL of an acidic solution with 8 mL of a 42% acidic solution, to make a 50% acidic solution. Find the percent acid concentration of the first solution. \n" ); document.write( "

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Tim mixed 12 mL of an acidic solution with 8 mL of a 42% acidic solution, to make a 50% acidic solution.
\n" ); document.write( "Find the percent acid concentration of the first solution.
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\n" ); document.write( "let x = the per cent of the 12 ml solution
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\n" ); document.write( "12x + 42(8) = 50(12+8)
\n" ); document.write( "12x + 336 = 50(20)
\n" ); document.write( "12x + 336 = 1000
\n" ); document.write( "12x = 1000 - 336
\n" ); document.write( "12x = 664
\n" ); document.write( "x = 664/12
\n" ); document.write( "x = 55 $\"1%2F3\"$ % is the 12 ml solution \n" ); document.write( "

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