document.write( "Question 12023: A collection of 30 coins worth $5.50 consists of nickles, dimes, and quarters. There are twice as many dimes as nickles. How many quarters are there? \n" ); document.write( "
Algebra.Com's Answer #11619 by stanbon!(97)\"\" \"About 
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Let number of nickels be \"x\".
\n" ); document.write( "Then number of dimes is \"2x\".
\n" ); document.write( "And number of quarters is \"30-3x\"
\n" ); document.write( "Value of nickels is (5)x cents
\n" ); document.write( "Value dimes is (10)2x = 20x cents
\n" ); document.write( "Value of quarters is (25)(30-3x)= 750-75x cents
\n" ); document.write( "EQUATION:
\n" ); document.write( "Value of nickels + Value of dimes + Value of quarters = 550 cents
\n" ); document.write( " 5x + 20x + 750-75x = 550
\n" ); document.write( " -50 x = -200
\n" ); document.write( " x = 4 (number of nickels)
\n" ); document.write( " 2x = 8 (number of dimes)
\n" ); document.write( " 30-3x = 30-12 = 18 (number of quarters)\r
\n" ); document.write( "\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.\r
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