document.write( "Question 1171402: A blue pen is $0.25 more expensive than a black pen. At the store, Ms. Wing buys 10 black pens and 4 blue pens and pays a total of $20.00.\r
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Algebra.Com's Answer #796368 by josgarithmetic(39618)\"\" \"About 
You can put this solution on YOUR website!
blue pen is black pen + 0.25 dollars.\r
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\n" ); document.write( "\n" ); document.write( "blue pen, y+0.25
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\n" ); document.write( "Ms. Wing buys 10 black pens and 4 blue pens and pays a total of $20.00.
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\n" ); document.write( "\n" ); document.write( "\"10y%2B4%28y%2B0.2%295=20\"\r
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