document.write( "Question 639250: Nancy bought 12 CDs. Some of the CDs coat $7.50 each and the rest cost $6.50 each. How many CDs were bought at each price if Nancy spent a total of $82? \n" ); document.write( "
Algebra.Com's Answer #402667 by aquyu214(10)\"\" \"About 
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X as CDs cost 7.5 ea
\n" ); document.write( "Y as CDs cost 6.5 ea\r
\n" ); document.write( "\n" ); document.write( "7.5*X+6.5*Y=82
\n" ); document.write( "X+Y=12\r
\n" ); document.write( "\n" ); document.write( "If all 12 CD are 7.5 ea,
\n" ); document.write( "7.5*X+7.5*Y=90
\n" ); document.write( "Minus [7.5*X+6.5*Y=82]
\n" ); document.write( "Y=8
\n" ); document.write( "X=4\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
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