document.write( "Question 1205410: Marie has 39 quarters and nickels. The total value is $ 5.15.
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Algebra.Com's Answer #842170 by ikleyn(52781) $\"\"$ $\"About$

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\n" ); document.write( "Marie has 39 quarters and nickels. The total value is $ 5.15.
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document.write( "Let Q be the number of quarters.\r\n" );
document.write( "Then the number of nickels is (39-Q).\r\n" );
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document.write( "Write the total money equation, in cents\r\n" );
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document.write( "    25Q + 5*(39-Q) = 515  cents.\r\n" );
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document.write( "Simplify and find Q\r\n" );
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document.write( "    25Q + 5*39 - 5Q = 515\r\n" );
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document.write( "    25Q - 5Q = 515 - 5*39\r\n" );
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document.write( "      20Q    =    320\r\n" );
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document.write( "        Q    =    320/20 = 16.\r\n" );
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document.write( "ANSWER.  16 quarters and 39-16 = 23 nickels.\r\n" );
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document.write( "CHECK.  25*16 + 5*23 = 515 cents, in total.    ! correct !\r\n" );
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\n" ); document.write( "\n" ); document.write( "For introductory coin problems, look into the lessons\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
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