document.write( "Question 987811: You have 20 coins (dimes and quarters) total. They total $3.05. How many dimes and quarters do you have? \n" ); document.write( "
Algebra.Com's Answer #807953 by CubeyThePenguin(3113)\"\" \"About 
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d = number of dimes
\n" ); document.write( "q = number of quarters\r
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\n" ); document.write( "\n" ); document.write( "d + q = 20
\n" ); document.write( "10d + 25q = 305\r
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\n" ); document.write( "\n" ); document.write( "Multiply the first equation by 25.\r
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\n" ); document.write( "\n" ); document.write( "25d + 25q = 500
\n" ); document.write( "-(10d + 25q = 305)
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\n" ); document.write( "15d = 195
\n" ); document.write( "d = 13\r
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\n" ); document.write( "\n" ); document.write( "You have 13 dimes and 7 quarters.
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