document.write( "Question 1162819: You need a 35% alcohol solution. On hand, you have a 140 mL of a 65% alcohol mixture. How much pure water will you need to add to obtain the desired solution?\r
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Algebra.Com's Answer #786680 by ikleyn(52803) $\"\"$ $\"About$

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document.write( "Let  x  be the volume of the pure water under the question, in mL.\r\n" );
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document.write( "Then the volume of the pure alcohol in 140 mL of the 65% alcohol solution is  0.65*140 mL.\r\n" );
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document.write( "The total volume after adding x mL of water is (140+x) mL.\r\n" );
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document.write( "The concentration equation for the resulting mixture after adding water is\r\n" );
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document.write( "     = 0.35.\r\n" );
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document.write( "From the equation, \r\n" );
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document.write( "    0.065*140 = 0.35*(140+x)\r\n" );
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document.write( "    0.065*140 = 0.35*140 + 0.35x\r\n" );
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document.write( "    x =  = 120 mL.\r\n" );
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document.write( "ANSWER.  120 mL of water should be added.\r\n" );
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\n" ); document.write( "\n" ); document.write( "In this site, there is entire bunch of lessons covering various types of mixture problems\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( "    - Word problems on mixtures for antifreeze solutions \r
\n" ); document.write( "\n" ); document.write( "    - Word problems on mixtures for dry substances like coffee beans, nuts, cashew and peanuts\r
\n" ); document.write( "\n" ); document.write( "    - Word problems on mixtures for dry substances like candies, dried fruits\r
\n" ); document.write( "\n" ); document.write( "    - Word problems on mixtures for dry substances like soil and sand\r
\n" ); document.write( "\n" ); document.write( "    - Word problems on mixtures for alloys \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( "    - Draining-replacing mixture problems \r
\n" ); document.write( "\n" ); document.write( "    - How much water must be evaporated \r
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\n" ); document.write( "\n" ); document.write( "    - OVERVIEW of lessons on word problems for mixtures\r
\n" ); document.write( "\n" ); document.write( "in this site.\r
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\n" ); document.write( "\n" ); document.write( "A convenient place to quickly observe these lessons from a \"bird flight height\" (a top view) is the last lesson in the list.\r
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\n" ); document.write( "\n" ); document.write( "The most closest to your problem is the lesson marked (*) in the list.\r
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\n" ); document.write( "\n" ); document.write( "Read the lessons and become an expert in solution the 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 online textbook 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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