document.write( "Question 1143710: Ann has a piggy bank with 48 coins, all of which are dimes and nickels. The total amount of money in the piggy bank is $3.90. How many more dimes are there than Nickles?
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Algebra.Com's Answer #764590 by ikleyn(52786) $\"\"$ $\"About$

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document.write( "Let x be the number of dimes; then the number of nickels is 48-x.\r\n" );
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document.write( "The \"money\" equation (also called \"the value equation\") is\r\n" );
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document.write( "    10x + 5*(48-x) = 390   cents.\r\n" );
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document.write( "Solve for x\r\n" );
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document.write( "    10x + 240 - 5x = 390\r\n" );
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document.write( "    10x - 5x = 390 - 240\r\n" );
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document.write( "     5x      = 150\r\n" );
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document.write( "      x      = 150/5 = 30.\r\n" );
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document.write( "Thus Ann has 30 dimes.  The rest 48-30 = 18 coins are nickels.    \r\n" );
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document.write( "30-18 = 12.\r\n" );
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document.write( "ANSWER.  There are 12 more dimes than nickels.\r\n" );
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\n" ); document.write( "\n" ); document.write( "If you want to learn on how to solve coin problems, look into the lesson on this subject that were written specially for you:\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( "    - Three methods for solving standard (typical) coin word problems\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( "    - Non-typical coin problems \r
\n" ); document.write( "\n" ); document.write( "    - OVERVIEW of lessons on coin word problems\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( "A convenient place to quickly observe these lessons from a \"bird flight height\" (a top view) is the last lesson in the list.\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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\n" ); document.write( "\n" ); document.write( "Save the link to this online textbook together with its description\r
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\n" ); document.write( "\n" ); document.write( "Free of charge online textbook in ALGEBRA-I
\n" ); document.write( "https://www.algebra.com/algebra/homework/quadratic/lessons/ALGEBRA-I-YOUR-ONLINE-TEXTBOOK.lesson\r
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\n" ); document.write( "\n" ); document.write( "to your archive and use it when it is needed.\r
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