document.write( "Question 113480: Please help.\r
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document.write( "A coffee merchant has coffee beans that sell for $9 per pound and $12 per pound.
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document.write( "The two types are to be mixed to create 100 lb of a mixture that will sell for $11.25 per pound. \r
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document.write( "How much of each type of bean should be used in the mixture?\r
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document.write( "Please show the equations used for the solution.\r
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document.write( "Thanks
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document.write( "JMS\r
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Algebra.Com's Answer #82570 by checkley71(8403)![]() ![]() ![]() You can put this solution on YOUR website! 9X+12(100-X)=100*11.25 \n" ); document.write( "9X+1200-12X=1125 \n" ); document.write( "-3X=1125-1200 \n" ); document.write( "-3X=-75 \n" ); document.write( "X=-75/-3 \n" ); document.write( "X=25 ANSWER. FOR THE POUNDS OF $9 COFFEE USED. \n" ); document.write( "100-25=75 FOR THE POUNDS OF $12 COFFEE USED. \n" ); document.write( "PROOF \n" ); document.write( "9*25+12*75=100*11.25 \n" ); document.write( "225+900=1125 \n" ); document.write( "1125=1125\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |