document.write( "Question 970459: an alloy of gold,silverand bronze contain 90% bronze, 7% gold and3% silver.a second alloy of bronze and silver only is melted with the first and mixture contain 85% of bronze,5% of gold,10% of silver find the percentage of bronze in second alloy?
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Algebra.Com's Answer #593082 by josmiceli(19441)\"\" \"About 
You can put this solution on YOUR website!
I will say that the quantity of metal that I
\n" ); document.write( "start out with is 100 units ( the units don't
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\n" ); document.write( "That means I start with 90 units of bronze,
\n" ); document.write( "7 units of gold, and 3 units of silver
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\n" ); document.write( "Now I will say there are \"+a+\" units of the
\n" ); document.write( "2nd mixture where \"+a+\" could be any number
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\n" ); document.write( "In the 2nd mixture, there is:
\n" ); document.write( "\"+.85a+\" units of bronze
\n" ); document.write( "\"+.05a+\" units pf gold
\n" ); document.write( "\"+.1a+\" units of silver
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\n" ); document.write( "The amount of gold did not change, so
\n" ); document.write( "\"+.05a+=+7+\"
\n" ); document.write( "\"+a+=+140+\" units of final mixture
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\n" ); document.write( "\"+.85a+=+.85%2A140+\"
\n" ); document.write( "\"+.85a+=+119+\" units of bronze
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\n" ); document.write( "\"+.1a+=+.1%2A140+\"
\n" ); document.write( "\"+.1a+=+14+\" units of silver
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\n" ); document.write( "I started with 90 units of bronze, and
\n" ); document.write( "ended up with 119, so there were
\n" ); document.write( "\"+119+-+90+=+29+\" units of bronze
\n" ); document.write( "in the 2nd mixture
\n" ); document.write( "\"+140+-+100+=+40+\" units in 2nd mixture
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\n" ); document.write( "\"+29+%2F+40+=+.725+\"
\n" ); document.write( "There is 72.5% bronze in the 2nd mixture
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\n" ); document.write( "check the answer:
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\n" ); document.write( "\"+.1%2A140+=+14+\"
\n" ); document.write( "\"+14+-+3+=+11+\"
\n" ); document.write( "\"+11%2F40+=+.275+\"
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\n" ); document.write( "\"+.725+%2B+.275+=+1+\"
\n" ); document.write( "correct, because no additional gold was added
\n" ); document.write( "Hope you can follow this and it makes sense\r
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