document.write( "Question 107722: On a buying trip in Los Angles, Rosaria Perez ordered 120 pieces of jewelry; a number of bracelets at $4 each and a number of necklaces at $8 each. She wrote a check for $560 to pay for the order. How many bracelets and how many necklaces di Rosaria purchase? \n" ); document.write( "
Algebra.Com's Answer #78473 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Rosaria Perez ordered 120 pieces of jewelry; a number of bracelets at $4 each and a number of necklaces at $8 each. She wrote a check for $560 to pay for the order. How many bracelets and how many necklaces di Rosaria purchase? \n" ); document.write( "------------- \n" ); document.write( "Let # of $4 pieces be \"x\"; value is 4x dollars \n" ); document.write( "-------------- \n" ); document.write( "# of $8 pieces is \"120-x\" ; value is 8(120-x)=960-8x dollars \n" ); document.write( "--------------- \n" ); document.write( "EQUATION: \n" ); document.write( "value + value = 560 dollars \n" ); document.write( "4x + 960-8x = 560 \n" ); document.write( "-4x = -400 \n" ); document.write( "x = 100 (# of $4 pieces) \n" ); document.write( "120-x = 20 (# of $8 pieces) \n" ); document.write( "================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H.\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |