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)\"\" \"About 
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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( "
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