document.write( "Question 231061: A cashier goes to the bank to get $10 worth of change. He requests twice as many
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document.write( "quarters as half dollars, twice as many dimes as quarters, three times as many
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document.write( "nickels as dimes, and no pennies or dollars. How many of each coin did the cashier
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document.write( "get? \n" );
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Algebra.Com's Answer #171080 by Theo(13342)![]() ![]() You can put this solution on YOUR website! f = number of dollars \n" ); document.write( "h = number of half dollars \n" ); document.write( "q = number of quarters \n" ); document.write( "d = number of dimes \n" ); document.write( "n = number of nickels \n" ); document.write( "p = number of pennies.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "total money equals $10.00\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "f * 1 = amount of money in dollars \n" ); document.write( "h * .5 = amount of money in half dollars \n" ); document.write( "q * .25 = amount of money in quarters \n" ); document.write( "d * .1 = amount of money in dimes \n" ); document.write( "n * .05 = amount of money in nickels \n" ); document.write( "p * .01 = amount of money in pennies\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Total money collected equals $10.00\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "1*f + .5*h + .25*q + .10*d + .05*n + .01*p = 10\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "f and p are equal to 0, so this equation becomes:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "1*0 + .5*h + .25*q + .10*d + .05*n + .01*0 = 10\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Simplify this equation to get:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( ".5*h + .25*q + .10*d + .05*n = 10\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Since:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "q = 2*h (number of quarters equals 2 times the number of half dollars) \n" ); document.write( "d = 2*q (number of dimes equals 2 times the number of quarters) \n" ); document.write( "n = 3*d (number of nickels equals 3 times the number of dimes)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Replace n with 3*d to get:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( ".5*h + .25*q + .10*d + .05*3*d = 10\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Replace d with 2*q to get:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( ".5*h + .25*q + .10*2*q + .05*3*2*q = 10\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Replace q with 2*d to get:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( ".5*h + .25*2*h + .10*2*2*h + .05*3*2*2*h = 10\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Simplify to get:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( ".5*h + .5*h + .4*h + .6*h = 10\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Combine like terms to get:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "2*h = 10\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Divide both sides by 2 to get:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "h = 5\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Since q = 2*h, then q = 10 \n" ); document.write( "Since d = 2*q, then d = 20 \n" ); document.write( "Since n = 3*d, then n = 60\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "You have:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "h = 5 * .5 = $2.50 \n" ); document.write( "q = 10 * .25 = $2.50 \n" ); document.write( "d = 20 * .1 = $1.00 \n" ); document.write( "n = 60 * .05 = $3.00\r \n" ); document.write( "\n" ); document.write( "Total = $10.00 which is correct.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Cashier gets:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "5 half dollars \n" ); document.write( "10 quarters \n" ); document.write( "20 dimes \n" ); document.write( "60 nickels\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |