document.write( "Question 342225: Twenty-five coins, a combination of dimes and quarters, are worth $4.75. How many coins are dimes? How many are quarters? \n" ); document.write( "

Algebra.Com's Answer #245008 by Fombitz(32388) $\"\"$ $\"About$

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Total number of coins
\n" ); document.write( "1. $\"D%2BQ=25\"$
\n" ); document.write( "Total value of coins
\n" ); document.write( " $\"10D%2B25Q=475\"$
\n" ); document.write( "2. $\"2D%2B5Q=95\"$
\n" ); document.write( "From eq. 1,
\n" ); document.write( " $\"D=25-Q\"$
\n" ); document.write( "Substitute into eq. 2,
\n" ); document.write( " $\"2%2825-Q%29%2B5Q=95\"$
\n" ); document.write( " $\"50-2Q%2B5Q=95\"$
\n" ); document.write( " $\"3Q=45\"$
\n" ); document.write( " $\"highlight%28Q=15%29\"$
\n" ); document.write( "Then from eq. 1,
\n" ); document.write( " $\"D%2B15=25\"$
\n" ); document.write( " $\"highlight%28D=10%29\"$
\n" ); document.write( "There are 10 dimes and 15 quarters.
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