document.write( "Question 921872: Fifteen ounces of pure silver are added to 60 oz of a silver alloy that is 25% silver. What is the percent concentration of the resulting alloy? \n" ); document.write( "
Algebra.Com's Answer #559247 by josmiceli(19441)\"\" \"About 
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\"+%28+15+%2B+.25%2A60+%29+%2F+%28+15+%2B+60+%29+\"
\n" ); document.write( "\"+%28+15+%2B+15+%29+%2F+75+\"
\n" ); document.write( "\"+30+%2F+75+=+2+%2F+5+\"
\n" ); document.write( "\"+%282%2F5%29%2A100+=+40+\"
\n" ); document.write( "40%
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