document.write( "Question 39034This question is from textbook
\n" ); document.write( ": 12.Mr. Coyne has some dimes and quarters. He has twice as many dimes as quarters. The total value of his coins is $8.10. How many dimes does he have? \n" ); document.write( "
Algebra.Com's Answer #24465 by checkley71(8403)\"\" \"About 
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810=2x*10+x*25 or 810=20x+25x or 810=45x or x=810/45 or x=18 quarters then he has 36 dimes \r
\n" ); document.write( "\n" ); document.write( "proof 36*10+18*25=810 or 360+450=810 or 810=810
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