document.write( "Question 1080447: Julie went to the post office and bought both $0.49 stamps and $0.34 postcards for her office's bills. She spent $75.80. The number of stamps was 20 more than twice the number of postcards. How many of each did she buy \n" ); document.write( "
Algebra.Com's Answer #694565 by stanbon(75887) ![]() You can put this solution on YOUR website! Julie went to the post office and bought both $0.49 stamps and $0.34 postcards for her office's bills. She spent $75.80. The number of stamps was 20 more than twice the number of postcards. How many of each did she buy \n" ); document.write( "-------- \n" ); document.write( "Equations: \n" ); document.write( "s = 2p + 20 \n" ); document.write( "0.49s + 0.34p = 75.80 \n" ); document.write( "--------------------------------- \n" ); document.write( "49s - 98p = 49*20 \n" ); document.write( "49s + 34p = 7580 \n" ); document.write( "---------------------------- \n" ); document.write( "Subtract and solve for \"p\":: \n" ); document.write( "132p = 6600 \n" ); document.write( "---- \n" ); document.write( "p = 50 (# of postcards) \n" ); document.write( "s = 2p+20 = 120 (# of stamps) \n" ); document.write( "------------ \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "----------- \n" ); document.write( " \n" ); document.write( " |