document.write( "Question 397861: A guy has five rings, each weighing 11 g, made of an alloy of 15% silver and 85% gold. He decides to melt down the rings and add enough silver to reduce the gold content to 55%. How much silver should he add? \n" ); document.write( "
Algebra.Com's Answer #281951 by ankor@dixie-net.com(22740)\"\" \"About 
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A guy has five rings, each weighing 11 g, made of an alloy of 15% silver and 85% gold. He decides to melt down the rings and add enough silver to reduce the gold content to 55%. How much silver should he add?
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\n" ); document.write( "Total weight: 5 * 11 = 55 grams
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\n" ); document.write( "Let s = amt of silver required
\n" ); document.write( "When 55% gold is obtained, silver content will be 45%
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\n" ); document.write( "Write a percent silver equation
\n" ); document.write( ".15(55) + s = .45(s+55)
\n" ); document.write( "8.25 + s = .45s + 24.75
\n" ); document.write( "s - .45s = 24.75 - 8.25
\n" ); document.write( ".55s = 16.5
\n" ); document.write( "s = \"16.5%2F.55\"
\n" ); document.write( "s = 30 grams of silver to be added
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\n" ); document.write( "Check
\n" ); document.write( ".15(55) + 30 = .45(30 + 55)
\n" ); document.write( "8.25 + 30 = .45(85)
\n" ); document.write( "38.25 = 38.5, confirms our solution of 30 grams of silver \n" ); document.write( "
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