document.write( "Question 1088585: Mark has 7 more dimes than nickels. The value of his dimes is 10 cents more than 3 times the value of his nickels. How many of each coin does Mark have? \n" ); document.write( "

Algebra.Com's Answer #702883 by ikleyn(52782) $\"\"$ $\"About$

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document.write( "The value of nickels is 5*N  cents.\r\n" );
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document.write( "The value of dimes is 10*(N+7) cents.\r\n" );
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document.write( "The condition says:\r\n" );
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document.write( "    The value of his dimes = 3 times the value of his nickels + 10 cents,     or\r\n" );
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document.write( "10*(N+7) = 3*(5N) + 10,   or\r\n" );
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document.write( "10N + 70 = 15N + 10,   or\r\n" );
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document.write( "10N - 15N = 10 - 70,   or\r\n" );
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document.write( "-5N = - 60  ====>  N = 12.\r\n" );
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document.write( "Answer.  12 nickels and 12+7 = 19 dimes.\r\n" );
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\n" ); document.write( "\n" ); document.write( "Solved.\r
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\n" ); document.write( "\n" ); document.write( "There is entire bunch of lessons on coin problems\r
\n" ); document.write( "\n" ); document.write( "    - Coin problems\r
\n" ); document.write( "\n" ); document.write( "    - More Coin problems\r
\n" ); document.write( "\n" ); document.write( "    - Solving coin problems without using equations\r
\n" ); document.write( "\n" ); document.write( "    - Kevin and Randy Muise have a jar containing coins\r
\n" ); document.write( "\n" ); document.write( "    - Typical coin problems from the archive\r
\n" ); document.write( "\n" ); document.write( "    - More complicated coin problems\r
\n" ); document.write( "\n" ); document.write( "    - Solving coin problems mentally by grouping without using equations\r
\n" ); document.write( "\n" ); document.write( "    - Santa Claus helps solving coin problem\r
\n" ); document.write( "\n" ); document.write( "    - OVERVIEW of lessons on coin word problems\r
\n" ); document.write( "\n" ); document.write( "in this site.\r
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\n" ); document.write( "\n" ); document.write( "You will find there the lessons for all levels - from introductory to advanced,
\n" ); document.write( "and for all methods used - from one equation to two equations and even without equations. \r
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\n" ); document.write( "\n" ); document.write( "Read them and become an expert in solution of coin problems.\r
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\n" ); document.write( "\n" ); document.write( "Also, you have this free of charge online textbook in ALGEBRA-I in this site\r
\n" ); document.write( "\n" ); document.write( "    - ALGEBRA-I - YOUR ONLINE TEXTBOOK.\r
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\n" ); document.write( "\n" ); document.write( "The referred lessons are the part of this online textbook under the topic \"Coin problems\".\r
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