document.write( "Question 1162004: A foundry has been commissioned to make souvenir coins. The coins are to be made from an alloy that is 40% silver. The foundry has on hand two alloys, one with 50% silver content and one with a 25% silver content. How many kilograms of each alloy should be used to make 40 kilograms of the 40% silver alloy?\r
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Algebra.Com's Answer #785668 by ikleyn(52786) $\"\"$ $\"About$

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document.write( "Let x be the amount of the 50% silver alloy, in kilograms.\r\n" );
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document.write( "Then the amount of the 25% silver alloy is (40-x) kilograms.\r\n" );
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document.write( "The pure silver amount in ingredients is  0.5*x + 0.25*(40-x) kilograms.\r\n" );
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document.write( "The pure silver amount in 40 kilograms of the 40% alloy is 0.4*40 = 16 kilograms.\r\n" );
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document.write( "It gives you this equation\r\n" );
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document.write( "    0.5x + 0.25*(40-x) = 16.\r\n" );
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document.write( "From the equation\r\n" );
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document.write( "    x =  =  = 24 kilograms.\r\n" );
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document.write( "ANSWER.  24 kilograms of the 50% silver alloy should be mixed with  (40-24) = 16 kilograms of the 25% silver alloy.\r\n" );
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\n" ); document.write( "\n" ); document.write( "It is a standard and typical problem on mixtures. See the lessons\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( "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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