document.write( "Question 108059: Warren has 40 coins (all nickels, dimes, and quarters) worth $4.05. He has 7
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Algebra.Com's Answer #78756 by scott8148(6628)\"\" \"About 
You can put this solution on YOUR website!
let x=dimes, so x+7=nickels and 40-(2x+7)=quarters ... 10x+5(x+7)+25(40-(2x+7))=405\r
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\n" ); document.write( "\n" ); document.write( "10x+5x+35+1000-50x-175=405 ... -35x=-455
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