document.write( "Question 211328: Joy is an instructional assistant in one of the college labs. She is on a very tight budget. She loves Jamaican Blue Mountain coffee, but it costs $18 a pound. She decides to blend this with regular coffee beans that costs $2.37 a pound. If she spends $14.25 on 3 pounds of coffee, how many pounds of each did she purchase?\r
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document.write( "Round your answer to two decimal places.\r
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document.write( "She purchased______pounds of Jamaican Blue Mountain Coffee.
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document.write( "She purchased______ pounds of Regular Coffee.\r
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document.write( "i have no idea how to do this!!!!!
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document.write( "please help! \n" );
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Algebra.Com's Answer #159679 by checkley77(12844)![]() ![]() ![]() You can put this solution on YOUR website! 18x+2.37(3-x)=3*14.25 \n" ); document.write( "18x+7.11-2.37x=42.75 \n" ); document.write( "15.63x=42.75-7.11 \n" ); document.write( "15.63x=35.64 \n" ); document.write( "x=35.64/15.63 \n" ); document.write( "x=2.28 pounds of the $18 coffee is used. \n" ); document.write( "3=2.28=.72 pounds of the $2.37 coffee is used. \n" ); document.write( "Proof: \n" ); document.write( "18*2.28+2.37*.72=3*14.25 \n" ); document.write( "41.04+1.7=42.75 \n" ); document.write( "42.75~42.75 \n" ); document.write( "She purchased 2.28 pounds of Jamaican Blue Mountain Coffee. \n" ); document.write( "She purchased .72 pounds of Regular Coffee. \n" ); document.write( " \n" ); document.write( " |