document.write( "Question 131792: Audiocasette tapes cost 4 dollars each and compact discs cost 12 dollars each. If the number of audiocasette tape was 3 more than twice the number of compact discs and if a total of $92 was spent, how many audiocasette tapes and how many compact discs were purchased? \n" ); document.write( "
Algebra.Com's Answer #96223 by checkley71(8403)![]() ![]() ![]() You can put this solution on YOUR website! 4a+12c=92 \n" ); document.write( "a=2c+3 \n" ); document.write( "4(2c+3)+12c=92 \n" ); document.write( "8c+12+12c=92 \n" ); document.write( "20c=92-12 \n" ); document.write( "20c=80 \n" ); document.write( "c=80/20 \n" ); document.write( "c=4 compact disks were bought. \n" ); document.write( "a=2*4+3 \n" ); document.write( "a=8+3 \n" ); document.write( "a=11 audio cassetts were bought. \n" ); document.write( "proof \n" ); document.write( "4*11+12*4=92 \n" ); document.write( "44+48=92 \n" ); document.write( "92=92 \n" ); document.write( " |