document.write( "Question 311180: Two records and three tapes cost $31. Three records and two tapes cost $29. Find the cost of each record and each tape. \n" ); document.write( "
Algebra.Com's Answer #222552 by checkley77(12844)![]() ![]() ![]() You can put this solution on YOUR website! 2R+3T=31 MUKTIPLY THIS EQUATION BY 3. \n" ); document.write( "3R+2T=28 MULTIPLY THIS EQUATION BY -2 & ADD THEM. \n" ); document.write( "6R+9T=93 \n" ); document.write( "-6R-4T=-56 \n" ); document.write( "--------------- \n" ); document.write( "5T=37 \n" ); document.write( "T=37/5 \n" ); document.write( "T=$7.40 FOR EACH TAPE. \n" ); document.write( "2R+3*7.40=31 \n" ); document.write( "2R+22.20=31 \n" ); document.write( "2R=31-22.20 \n" ); document.write( "2R=8.8 \n" ); document.write( "R=8.8/2 \n" ); document.write( "R=$4.40 FOR EACH RECORD. \n" ); document.write( "PROOF: \n" ); document.write( "3*4.40+2*7.40=28 \n" ); document.write( "13.20+14.80=28 \n" ); document.write( "28=28 \n" ); document.write( " \n" ); document.write( " |