document.write( "Question 1073571: Solve the problem. You must write two equations with two variables and show steps to solve.\r
\n" ); document.write( "\n" ); document.write( "Anne and Nancy use a metal alloy that is 17% copper to make jewelery. How many ounces of an alloy that is 11% copper must be mixed with an alloy that is 22% copper to form 55 ounces of the desired alloy?
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Algebra.Com's Answer #688434 by jorel1380(3719)\"\" \"About 
You can put this solution on YOUR website!
Let n be the amount of 22% copper to be used, and m be the amount of 11% copper to be used. Then:
\n" ); document.write( "n+m=55 and
\n" ); document.write( ".22n+.11m=.17(55)
\n" ); document.write( "So:
\n" ); document.write( "n+m=55
\n" ); document.write( "m=55-n
\n" ); document.write( ".22n+.11(55-n)=9.35
\n" ); document.write( ".11n+6.05=9.35
\n" ); document.write( ".11n=3.3
\n" ); document.write( "n=30
\n" ); document.write( "m=25
\n" ); document.write( "They need 30 oz. of 22% alloy, and 25 oz. of 11% alloy to make their jewelery. ☺☺☺☺
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