document.write( "Question 1016669: A jar contains 70 coins, all of which are nickels and \r
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document.write( "dimes. The total value of the coins in the jar is $5.70.\r
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document.write( "How many nickels / dimes are in the jar? \n" );
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Algebra.Com's Answer #633076 by Boreal(15235)![]() ![]() You can put this solution on YOUR website! nickels=x \n" ); document.write( "dimes=y \n" ); document.write( "x+y=70 \n" ); document.write( ".05x+.10y=5.70 \n" ); document.write( "5x+10y=570, multiplying by 100. \n" ); document.write( "-5x-5y=-350, multiplying the first by -5 \n" ); document.write( "5y=220 \n" ); document.write( "y=44 dimes, $4.40 \n" ); document.write( "x=26 nickels, $1.30 \n" ); document.write( " |