document.write( "Question 1117430: amanda has a total of 80 nickels and quarters. The total value of the change is $7.60. How many nickels does she have? \n" ); document.write( "

Algebra.Com's Answer #732506 by ikleyn(52866) $\"\"$ $\"About$

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document.write( "Assume for a minute that all quarters are of the same charge as nickels, i.e. 5 cents (instead of 25 cents).\r\n" );
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document.write( "Then the full charge of 80 coins would be 5*80 = 400 cents = $4.00.\r\n" );
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document.write( "It is $3.60 less than $7.60, and the difference is due to the difference 25c-5c = 20c in charge between quarters and nickels.\r\n" );
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document.write( "So, we need to add/(to compensate) 20c for each quarter.  How many times ?   = 18 times.\r\n" );
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document.write( "It gives you the \r\n" );
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document.write( "Answer.  18 quarters and 80 - 18 = 62 nickels are there in the collection.\r\n" );
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document.write( "Check.   18*25 + 62*5 = 760 cents.   ! Correct !\r\n" );
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\n" ); document.write( "\n" ); document.write( "Solved   //   mentally.\r
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\n" ); document.write( "For coin problems and their detailed solutions see the lessons in this site:\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
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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 attentively and become an expert in this field.\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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