document.write( "Question 962372: Jessica needs 12lb of metal with 43% silver. If Jessica combines one metal with 12% silver, and another with 79% silver. How much of each metal does Jessica need? \n" ); document.write( "
Algebra.Com's Answer #587966 by stanbon(75887)\"\" \"About 
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Jessica needs 12 lb of metal with 43% silver. If Jessica combines one metal with 12% silver, and another with 79% silver. How much of each metal does Jessica need?
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\n" ); document.write( "Equations:
\n" ); document.write( "silver + silver = silver
\n" ); document.write( "0.12x + 0.79(12-x) = 0.43*12
\n" ); document.write( "12x + 79*12 - 79x = 43*12
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\n" ); document.write( "-67x = -36*12
\n" ); document.write( "x = 6.45 lb (amt. of 12% alloy needed)
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\n" ); document.write( "12-x = 5.55 lb (amt. of 79% alloy needed)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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