document.write( "Question 1040717: A collection of stamps consist of 3¢ stamps, 7¢ stamps, and 12 ¢ stamps. The number of 3 ¢ stamps is five less than the number of 7 ¢ stamps. The number of 12 ¢ stamps is one-half the number of 7 ¢ stamps. The total value of all the stamps is $2.73. Find the number of each type of stamp in the collection. \n" ); document.write( "
Algebra.Com's Answer #655608 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! A collection of stamps consist of 3¢ stamps, 7¢ stamps, and 12 ¢ stamps. \n" ); document.write( "The number of 3 ¢ stamps is five less than the number of 7 ¢ stamps. \n" ); document.write( "t = s - 7 \n" ); document.write( "---------------- \n" ); document.write( "The number of 12 ¢ stamps is one-half the number of 7 ¢ stamps. \n" ); document.write( "w = (1/2)s \n" ); document.write( "--------------------------- \n" ); document.write( "The total value of all the stamps is $2.73. \n" ); document.write( "t + s + w = 273 \n" ); document.write( "Find the number of each type of stamp in the collection. \n" ); document.write( "-------------------- \n" ); document.write( "Substitute for \"t\" and for \"w\" and solve for \"s\":: \n" ); document.write( "s-7 + s + (1/2)s = 273 \n" ); document.write( "---------------------------- \n" ); document.write( "(5/2)s = 280 \n" ); document.write( "s = 2*56 \n" ); document.write( "s = 112 \n" ); document.write( "---- \n" ); document.write( "t = s-7 = 105 \n" ); document.write( "---- \n" ); document.write( "w + s/2 = 56 \n" ); document.write( "----------------- \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "----------- \n" ); document.write( " \n" ); document.write( " |