document.write( "Question 1092835: Tim has twice as much money in nickels as in dimes. He has 30 coins in all. How many of each coin does he have?
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Algebra.Com's Answer #707444 by ikleyn(52797) $\"\"$ $\"About$

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document.write( "Let N be the number of nickels.\r\n" );
document.write( "Then the number of dimes is (30-N).\r\n" );
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document.write( "Amount of money (cents) in nickels is  5*N.\r\n" );
document.write( "Amount of money (cents) in dimes   is 10*(30-N).\r\n" );
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document.write( "The condition says\r\n" );
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document.write( "5N = 2*(10*(30-N)).\r\n" );
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document.write( "It is your equation to solve. Simplify and find N:\r\n" );
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document.write( "5N = 20*(30-N)  ====>  5N = 600 - 20N  ====>  5N + 20N = 600  ====>  25N = 600  ====>  N =  = 24.\r\n" );
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document.write( "Answer.  24 nickels and 6  = 30-24 dimes.\r\n" );
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document.write( "Check   Amount in nickels = 5*24 = 120 cents.\r\n" );
document.write( "        Amount in dimes = 10*6 = 60 cents.    ! Correct !.\r\n" );
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