document.write( "Question 1020279: I have 28 silver colored coins that amount to $2.80 in my pocket. Three times the number of nickels plus the number of quarters is the same as the number of dimes. How many of each type of coin do I have in my pocket? \n" ); document.write( "

Algebra.Com's Answer #636357 by Fombitz(32388) $\"\"$ $\"About$

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1. $\"N%2BD%2BQ=28\"$
\n" ); document.write( "2. $\"3N%2BQ=D\"$
\n" ); document.write( "3. $\"5N%2B10D%2B25Q=280\"$
\n" ); document.write( "Use eq. 2 to substitute for D in 1 and 3.
\n" ); document.write( " $\"N%2B3N%2BQ%2BQ=28\"$
\n" ); document.write( " $\"4N%2B2Q=28\"$
\n" ); document.write( "4. $\"2N%2BQ=14\"$
\n" ); document.write( ".
\n" ); document.write( ".
\n" ); document.write( " $\"5N%2B10%283N%2BQ%29%2B25Q=280\"$
\n" ); document.write( " $\"5N%2B30N%2B10Q%2B25Q=280\"$
\n" ); document.write( " $\"35N%2B35Q=280\"$
\n" ); document.write( "5. $\"N%2BQ=8\"$
\n" ); document.write( "Now subtract 5 from 4 to eliminate Q.
\n" ); document.write( " $\"2N%2BQ-N-Q=14-8\"$
\n" ); document.write( " $\"N=6\"$
\n" ); document.write( "Then,
\n" ); document.write( " $\"2%286%29%2BQ=14\"$
\n" ); document.write( " $\"12%2BQ=14\"$
\n" ); document.write( " $\"Q=2\"$
\n" ); document.write( "and
\n" ); document.write( " $\"3%286%29%2B2=D\"$
\n" ); document.write( " $\"D=20\"$
\n" ); document.write( " \n" ); document.write( "

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