document.write( "Question 32277: Two kilograms of Columbian coffee are mixed with 1 kilogram of Brazilian coffee to produce a mixture selling for $7.00 a kilogram. If 3 kilograms of Columbian coffee were mixed with 2 kilograms of Brazilian coffee, the mixture would sell for $6.90 a kilogram. What is the value of a kilogram of each type of cofee?
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Algebra.Com's Answer #18804 by mukhopadhyay(490)\"\" \"About 
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Sell Price of Columbian Coffee = $x/kg
\n" ); document.write( "Sell Price of Brazilian Coffee per kg = 21 - 2x (hint: 3*7=21)
\n" ); document.write( "3x+2(21-2x)=5(6.90)
\n" ); document.write( "=>42-x=34.50
\n" ); document.write( "=>x=7.50
\n" ); document.write( "Answer: Columbian sells for $7.50/kg and Brazilian for $6/kg
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