document.write( "Question 876354: Sam has 15 coins, all nickels and dimes, with a total value of $0.90. How many of each coin does he have? (Let d = the number of dimes and n = the number of nickels).\r
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document.write( "A. Write a system of equations to model the problem. \r
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document.write( "B. Solve the system. \r
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document.write( "C. State your answer with the proper label or labels. \n" );
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Algebra.Com's Answer #528728 by ewatrrr(24785)![]() ![]() You can put this solution on YOUR website! n + d = 15, n = \n" ); document.write( "10d + 5n = 90 (amount of cents makes sense) \n" ); document.write( "10d + 5(15-d) = 90 \n" ); document.write( " 5d = 15 \n" ); document.write( " d = 3 and n = 12 \n" ); document.write( "3 Dimes and 12 nickels and \n" ); document.write( " \n" ); document.write( " |