document.write( "Question 1199176: A biologist has two brine solutions, one containing 2% salt and another containing 8% salt. How many milliliters of each solution should she mix to obtain 1 L of a solution that contains 5.6% salt?
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\n" ); document.write( "A biologist has two brine solutions, one containing 2% salt and another containing 8% salt. How many milliliters of each solution should she mix to obtain 1 L of a solution that contains 5.6% salt?
\n" ); document.write( "2% solution mL
\n" ); document.write( "8% solution mL
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Let amount of 2% salt be T\r\n" );
document.write( "Then amount of 8% salt = 1 - T\r\n" );
document.write( "   We then get: .02T + .08(1 - T) = .056(1)\r\n" );
document.write( "                .02T + .08 - .08T = .056\r\n" );
document.write( "                      .02T - .08T = .056 - .08\r\n" );
document.write( "                           - .06T = - .024\r\n" );
document.write( "Amount of 2% solution, or \r\n" );
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document.write( "Amount of 8% solution = .6 L = .6(1,000) = 600 mL

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