document.write( "Question 640349: Mixture Problem. A pot contains 6 L of brine at a concentration of 120 g/L. How much of the water should be boiled off to increase the concentration to 200 g/L? \n" ); document.write( "

Algebra.Com's Answer #403149 by Edwin McCravy(20054) $\"\"$ $\"About$

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Mixture Problem. A pot contains 6 L of brine at a concentration of 120 g/L. How much of the water should be boiled off to increase the concentration to 200 g/L?
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document.write( "Brine is salt mixed with water.  First we calculate the number of grams\r\n" );
document.write( "of salt in the 6 L:\r\n" );
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document.write( "Each liter contains 120 grams of salt, so (6L)(120 g/L) = 720 grams of salt.\r\n" );
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document.write( "Let x = the number of Liters of water that must remain so as to have 200 g/L\r\n" );
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document.write( "                                          (xL)(200 g/L) = 720 grams of salt.\r\n" );
document.write( "                                                   200x = 720\r\n" );
document.write( "                                                      x = 3.6 \r\n" );
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document.write( "So there must remain 3.6 Liters of water.\r\n" );
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document.write( "Therefore since there are 6 L to begin with, 6 - 3.6 or 2.4 liters of\r\n" );
document.write( "water must be boiled off.\r\n" );
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document.write( "Edwin

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