document.write( "Question 1162264: How many milligrams of uranium with 72% purity and 84.8% must be mixed to obtain 9 milligrams with 80% purity? \n" ); document.write( "
Algebra.Com's Answer #786032 by ikleyn(52782)\"\" \"About 
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document.write( "x milligrams of the 84.8% purity \r\n" );
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document.write( "and (9-x) milligrams of the 72% purity.\r\n" );
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document.write( "The amount of the pure uranium in ingredients is  0.848x + 0.72*(9-x) milligrams.\r\n" );
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document.write( "The amount of the pure uranium in the mixture (alloy ?) is  0.8*9  milligrams.\r\n" );
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document.write( "The mass balance equation for pure uranium is\r\n" );
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document.write( "    0.848x + 0.72*(9-x) = 0.8*9    milligrams.\r\n" );
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document.write( "From the equation\r\n" );
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document.write( "    x = \"%280.8%2A9+-+0.72%2A9%29%2F%280.848-0.72%29\" = 5.625.\r\n" );
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document.write( "ANSWER.  5.625 milligrams of the 84.8% purity and the rest,  9-5.625 = 3.375 milligrams of the 72% purity.\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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