document.write( "Question 1164056: A merchant has coffee worth $20 a pound that she wishes to mix with 90 pounds of coffee worth $80 a pound to get a mixture that can be sold for $40 a pound . How many pounds of the $20 coffee should be used ? \n" ); document.write( "

Algebra.Com's Answer #788353 by ikleyn(52932) $\"\"$ $\"About$

You can put this solution on YOUR website!
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document.write( "Your basic equation for the price of the mixture per pound is\r\n" );
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document.write( "     = 40  dollars per pound for the mixture.\r\n" );
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document.write( "It implies\r\n" );
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document.write( "    20x + 7200 = 40*(x+90)\r\n" );
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document.write( "    20x + 7200 = 40x + 3600\r\n" );
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document.write( "    7200 - 3600 = 40x - 20x\r\n" );
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document.write( "    3600        = 20x\r\n" );
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document.write( "    x           = 3600/20 = 180 pounds.\r\n" );
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document.write( "CHECK.   = 40 dollars per pound for the mixture.  ! Correct !\r\n" );
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\n" ); document.write( "\n" ); document.write( "---------------\r
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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
\n" ); document.write( "\n" ); document.write( "    - Advanced mixture problems \r
\n" ); document.write( "\n" ); document.write( "    - Advanced mixture problem for three alloys \r
\n" ); document.write( "\n" ); document.write( "    - Unusual word problem on mixtures \r
\n" ); document.write( "\n" ); document.write( "    - Check if you know the basics of mixtures from Science \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
\n" ); document.write( "\n" ); document.write( "    - Advanced problems on draining and replacing \r
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\n" ); document.write( "\n" ); document.write( "    - OVERVIEW of lessons on word problems for mixtures\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( "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 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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