document.write( "Question 60293This question is from textbook Elementary and Intermediate Algebra
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document.write( ": This word problem has to do with coins, but I need to solve it by setting up and solving a system of two linear equations in two variables.\r
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document.write( "Cindy has 43 coins consisting of nickels and dimes. The total value of the coins is $3.40. How many coins of each kind does she have?\r
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document.write( "I have gotten this far:
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document.write( "n + d = 3.40
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document.write( "is that right? \n" );
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Algebra.Com's Answer #41424 by checkley71(8403)![]() ![]() ![]() You can put this solution on YOUR website! N+D=43 & 5N+10D=340 \n" ); document.write( "N=43-D \n" ); document.write( "5(43-D)+10D=340 \n" ); document.write( "215-5D+10D=340 \n" ); document.write( "5D=340-215 \n" ); document.write( "5D=125 \n" ); document.write( "D=125/5 \n" ); document.write( "D=25 NUMBER OF DIMES \n" ); document.write( "N+25=43 \n" ); document.write( "N=43-25 \n" ); document.write( "N=18 NUMBER OF NICKELS \n" ); document.write( "PROOF \n" ); document.write( "5*18+10*25=340 \n" ); document.write( "90+250=340 \n" ); document.write( "340=340 \n" ); document.write( " |