document.write( "Question 934739: An alloy is a mixture of metals. Suppose that a certain alloy is made by mixing 100 grams of an alloy containing 35% copper with 60 grams of an alloy containing 55% copper. How many grams of copper are in the resulting mixture? What percentage of the resulting mixture is copper? \n" ); document.write( "
Algebra.Com's Answer #567766 by ankor@dixie-net.com(22740)\"\" \"About 
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An alloy is a mixture of metals.
\n" ); document.write( " Suppose that a certain alloy is made by mixing 100 grams of an alloy containing 35% copper with 60 grams of an alloy containing 55% copper.
\n" ); document.write( " How many grams of copper are in the resulting mixture?
\n" ); document.write( " What percentage of the resulting mixture is copper?
\n" ); document.write( ":
\n" ); document.write( "From the information given we know that the final mixture: 100+60 = 160 grams
\n" ); document.write( ":
\n" ); document.write( "let x = the percent copper of the final mixture
\n" ); document.write( "35(100) + 55(60) = 160x
\n" ); document.write( "3500 + 3300 = 160x
\n" ); document.write( "6800 = 160x
\n" ); document.write( "x = 6800/160
\n" ); document.write( "x = 42.5%
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