document.write( "Question 408794: a store sells regular coffee for $4 a pound
\n" ); document.write( "and a gourmet coffee for $7 a pound
\n" ); document.write( "to get rid of 40 pounds
\n" ); document.write( "of the gourmet coffee,the shopkeeper plans to make
\n" ); document.write( "a gourmet blend to sell
\n" ); document.write( "for $5 a pound.
\n" ); document.write( "how many pounds of regular coffee should be used?\r
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\n" ); document.write( "\n" ); document.write( "thanks for your help!
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Algebra.Com's Answer #287913 by lwsshak3(11628)\"\" \"About 
You can put this solution on YOUR website!
a store sells regular coffee for $4 a pound
\n" ); document.write( "and a gourmet coffee for $7 a pound
\n" ); document.write( "to get rid of 40 pounds
\n" ); document.write( "of the gourmet coffee,the shopkeeper plans to make
\n" ); document.write( "a gourmet blend to sell
\n" ); document.write( "for $5 a pound.
\n" ); document.write( "how many pounds of regular coffee should be used? \r
\n" ); document.write( "\n" ); document.write( "..\r
\n" ); document.write( "\n" ); document.write( "let x=pounds of regular coffee to be use to make the blend
\n" ); document.write( "cost of this regular coffee=4x
\n" ); document.write( "cost of the gourmet coffee=40*7=280
\n" ); document.write( "cost of the new blend=(40+x)*5\r
\n" ); document.write( "\n" ); document.write( "4x+40*7=(40+x)*5
\n" ); document.write( "4x+280=200+5x
\n" ); document.write( "x=80 pounds
\n" ); document.write( "ans:
\n" ); document.write( "80 pounds of regular coffee should be used to make a gourmet blend.
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