document.write( "Question 758413: A and B are alloys of silver and copper. An alloy that is 5 parts A and 3 parts B is 52% silver. One that is 5 parts A and 11 parts B is 42% silver. What is the percentages of silver in A and B? \n" ); document.write( "
Algebra.Com's Answer #461460 by josgarithmetic(39617)\"\" \"About 
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Alloy A contains x percent silver
\n" ); document.write( "Allow B contains y percent silver\r
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\n" ); document.write( "\n" ); document.write( "5 parts A and 3 parts B:
\n" ); document.write( "\"%285x%2B3y%29%2F%285%2B3%29=52\"
\n" ); document.write( "\"5x%2B3y=8%2A52\"
\n" ); document.write( "\"highlight%285x%2B3y=216%29\"\r
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\n" ); document.write( "\n" ); document.write( "5 parts A and 11 parts B:
\n" ); document.write( "\"%285x%2B11y%29%2F%285%2B11%29=42\"
\n" ); document.write( "\"5x%2B11y=16%2A42\"
\n" ); document.write( "\"highlight%285x%2B11y=672%29\"\r
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\n" ); document.write( "\n" ); document.write( "Two simultaneous linear equations in two variables. Solve them as a system.
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