document.write( "Question 23414: Systems:\r
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document.write( "The coin box of a vending machine contains half as many quarters as dimes. If the total value of the coins is $22.50, how many dimes are there?\r
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document.write( "i tried many times to do this using systems my main equatoins are .25q+.10d=22.50 and q=2d, but im stuck i dont know what to do next.\r
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document.write( "thank you for your help :) \n" );
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Algebra.Com's Answer #12224 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Let number of dimes be \"2x\" \n" ); document.write( "Then number of quarters is \"x\" \n" ); document.write( "Value of dimes is (10)2x=20x cents \n" ); document.write( "Value of quarters is (25)x = 25x cents \n" ); document.write( "EQUATION: \n" ); document.write( " Value of dimes + Value of quarters = 2250 cents \n" ); document.write( " 20x + 25x = 2250 \n" ); document.write( " 45x = 2250 \n" ); document.write( " x = 50 (number of quarters) \n" ); document.write( " 2x = 100 (number of dimes)\r \n" ); document.write( "\n" ); document.write( "Cheers, \n" ); document.write( "Stan H.\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |