document.write( "Question 1199891: How many liters of water should be evaporated from 160 liters of a 12% saline solution so that the solution that remains is a 20% saline solution?
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Algebra.Com's Answer #833875 by ikleyn(52781)\"\" \"About 
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\n" ); document.write( "\n" ); document.write( "            I will tell you everything related to this problem, \r
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document.write( "In this problem, concentration is the ratio of the salt mass in kilograms\r\n" );
document.write( "to the water volume in liters (the salt itself does not add to the volume of the mixture).\r\n" );
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document.write( "So, 160 liters of the 12% saline solution contain 0.12*160 = 19.2 kilograms of salt.\r\n" );
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document.write( "When the water evaporates, the volume of the mixture decreases accordingly,\r\n" );
document.write( "but the amount of salt in it remains unchangeable.\r\n" );
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document.write( "In order for the 19.2 kg of salt form 20% solution, the volume of the mixture must be\r\n" );
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document.write( "    \"19.2%2F0.2\" = \"192%2F2\" = 96 liters.\r\n" );
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document.write( "It means that 160-96 = 64 liters of water must evaporate, which gives you the ANSWER.\r\n" );
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\n" ); document.write( "\n" ); document.write( "It is a standard and typical mixture problem.\r
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\n" ); document.write( "\n" ); document.write( "For introductory lessons covering various types of mixture word problems see\r
\n" ); document.write( "\n" ); document.write( "    - Mixture problems\r
\n" ); document.write( "\n" ); document.write( "    - More Mixture problems\r
\n" ); document.write( "\n" ); document.write( "    - Solving typical word problems on mixtures for solutions \r
\n" ); document.write( "\n" ); document.write( "    - Typical word problems on mixtures from the archive\r
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\n" ); document.write( "\n" ); document.write( "    - Special type mixture problems on DILUTION adding water\r
\n" ); document.write( "\n" ); document.write( "    - Increasing concentration of an acid solution by adding pure acid \r
\n" ); document.write( "\n" ); document.write( "    - How much water must be evaporated \r
\n" ); document.write( "\n" ); document.write( "in this site.\r
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\n" ); document.write( "\n" ); document.write( "You will find there ALL TYPICAL mixture problems with different methods of solutions,
\n" ); document.write( "explained at different levels of detalization,  from very detailed to very short.\r
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\n" ); document.write( "\n" ); document.write( "Read them and become an expert in solution mixture word problems.\r
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\n" ); document.write( "\n" ); document.write( "Also,  you have this free of charge online textbook in ALGEBRA-I in this site\r
\n" ); document.write( "\n" ); document.write( "    - ALGEBRA-I - YOUR ONLINE TEXTBOOK.\r
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\n" ); document.write( "\n" ); document.write( "The referred lessons are the part of this textbook in the section \"Word problems\" under the topic \"Mixture problems\".\r
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\n" ); document.write( "\n" ); document.write( "Save the link to this online textbook together with its description\r
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\n" ); document.write( "\n" ); document.write( "Free of charge online textbook in ALGEBRA-I
\n" ); document.write( "https://www.algebra.com/algebra/homework/quadratic/lessons/ALGEBRA-I-YOUR-ONLINE-TEXTBOOK.lesson\r
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\n" ); document.write( "\n" ); document.write( "to your archive and use it when it is needed.\r
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