document.write( "Question 704201: British sterling silver is a copper-silver alloy that is 7.5% copper by weight. How many grams of pure copper and how many grams of British sterling silver should be used to prepare 210 grams of a copper-silver alloy that is 12% copper by weight? (Round your answers to one decimal place.) \n" ); document.write( "
Algebra.Com's Answer #433974 by josgarithmetic(39618)\"\" \"About 
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x grams pure copper, y grams of the sterling silver.\r
\n" ); document.write( "\n" ); document.write( "\"%281.00x%2B0.075y%29%2F210=0.12\"
\n" ); document.write( "\"x%2By=210\"\r
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\n" ); document.write( "\n" ); document.write( "Solve both for x, then equate the results of x to find y.\r
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\n" ); document.write( "\n" ); document.write( "x=25 grams pure copper,
\n" ); document.write( "y=185 grams sterling silver.
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