document.write( "Question 971132: Metal A contains 81% tin and 5% copper.
\n" ); document.write( "Metal B contains 1% tin and 20% copper.
\n" ); document.write( "What is the ratio metals A and B need to be combined in to get a mixture that is 3:1 tin to copper?
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Algebra.Com's Answer #593687 by stanbon(75887)\"\" \"About 
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Metal A contains 81% tin and 5% copper.
\n" ); document.write( "Metal B contains 1% tin and 20% copper.
\n" ); document.write( "What is the ratio metals A and B need to be combined in to get a mixture that is 3:1 tin to copper?
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\n" ); document.write( "Amt of tin:: 0.81A+ 0.01B
\n" ); document.write( "Amt of CU::: 0.05A+ 0.20B
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\n" ); document.write( "Equation:
\n" ); document.write( "[0.81A+0.01B]/[0.05A+0.20B] = 3/1
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\n" ); document.write( "0.81A + 0.01B = 0.15A+0.60B
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\n" ); document.write( "0.66A = 0.59B
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\n" ); document.write( "Ans: A: B = 0.59:0.66
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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