document.write( "Question 991979: Sam needs 3 lb of metal with 43% silver. If sam combines one metal with 18% silver, and another with 80% silvet, how much metal does he need? \n" ); document.write( "
Algebra.Com's Answer #611653 by josmiceli(19441)![]() ![]() You can put this solution on YOUR website! Let \n" ); document.write( "Let \n" ); document.write( "----------------- \n" ); document.write( "(1) \n" ); document.write( "(2) \n" ); document.write( "--------------------------- \n" ); document.write( "(2) \n" ); document.write( "(2) \n" ); document.write( "Multiply both sides of (1) by \n" ); document.write( "and subtract (1) from (2) \n" ); document.write( "(2) \n" ); document.write( "(1) \n" ); document.write( "---------------------- \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "and \n" ); document.write( "(1) \n" ); document.write( "(1) \n" ); document.write( "1.79 pounds of 18% silver are needed \n" ); document.write( "1.21 pounds of 80% silver are needed \n" ); document.write( "------------------------------- \n" ); document.write( "check: \n" ); document.write( "(2) \n" ); document.write( "(2) \n" ); document.write( "(2) \n" ); document.write( "(2) \n" ); document.write( "OK \n" ); document.write( " |