document.write( "Question 1057134: A scientist mixes water (containing no salt) with a solution that contains
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Algebra.Com's Answer #672217 by ikleyn(52786) $\"\"$ $\"About$

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\n" ); document.write( "A scientist mixes water (containing no salt) with a solution that contains
\n" ); document.write( "30% salt. She wants to obtain 210 ounces of a mixture
\n" ); document.write( "that is 15% salt. How many ounces of water and how many ounces of the 30% salt solution should she use?
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document.write( "Let W = the volume of water to be mixed in ounces).\r\n" );
document.write( "Then the volume of the 30% salt solution needed is (210-W).\r\n" );
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document.write( "The balance equation for the salt mass is\r\n" );
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document.write( "0.3*(210-W) = 0.15*210.\r\n" );
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document.write( "Simplify and solve for W:\r\n" );
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document.write( "63 - 0.3W = 31.5,\r\n" );
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document.write( "63 - 31.5 = 0.3W,\r\n" );
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document.write( "0.3W = 31.5,\r\n" );
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document.write( "W =  = 105.\r\n" );
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document.write( "Answer.  105 ounces of water is needed.\r\n" );
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\n" ); document.write( "\n" ); document.write( "There is entire bunch of the 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 alloys \r
\n" ); document.write( "\n" ); document.write( "    - Typical word problems on mixtures from the archive\r
\n" ); document.write( "\n" ); document.write( "in this site.\r
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\n" ); document.write( "\n" ); document.write( "Read them 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 textbook in the section \"Word problems\" under the topic \"Mixture problems\".\r
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\n" ); document.write( "\n" ); document.write( "The textbook contains many other solved word problems, as well as many other interesting and useful things.\r
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