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)![]() ![]() ![]() You can put this solution on YOUR website! 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? \n" ); document.write( "----------------------- \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 \n" ); document.write( "----- \n" ); document.write( "-67x = -36*12 \n" ); document.write( "x = 6.45 lb (amt. of 12% alloy needed) \n" ); document.write( "--- \n" ); document.write( "12-x = 5.55 lb (amt. of 79% alloy needed) \n" ); document.write( "----------- \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "========== \n" ); document.write( " |