document.write( "Question 72117: How can I show an equations used for this solution.\r
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document.write( "Jill has $3.50 in nickels and dimes. If she has 50 coins, how
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document.write( "many of each type of coin does she have? \n" );
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Algebra.Com's Answer #51588 by checkley75(3666)![]() ![]() ![]() You can put this solution on YOUR website! N+D=50 N=50-D \n" ); document.write( "5N+10D=350 NOW SUBSTITUTE (50-D) FOR N IN THIS EQUATION & SOLVE FOR D \n" ); document.write( "5(50-D)+10D=350 \n" ); document.write( "250-5D+10D=350 \n" ); document.write( "5D=350-250 \n" ); document.write( "5D=100 \n" ); document.write( "D=20 NUMBER OF DIMES. \n" ); document.write( "N+20=50 \n" ); document.write( "N=30 NUMBER OF NICKELS \n" ); document.write( "PROOF \n" ); document.write( "5*30=10*20=350 \n" ); document.write( "150+200=350 \n" ); document.write( "350=350 \n" ); document.write( " |