document.write( "Question 165650: Please help me solve this equation:
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document.write( " A merchant wishes to mix two grades of coffee, one of which sells for $0.80 per pound and one of which sells for $1.20 per pound. He wants to sell the mixture $1.10 per pound. If he has 25 pounds of the $0.80 coffee, how much of the $1.20 per pound coffee must he add so that the value of the final mixture is equal to the total value of the other two? \n" );
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Algebra.Com's Answer #122111 by checkley77(12844)![]() ![]() ![]() You can put this solution on YOUR website! .8*25+1.20x=1.10(25+x) \n" ); document.write( "20+1.20x=27.5+1.10x \n" ); document.write( "1.20x-1.10x=27.5-20 \n" ); document.write( ".10x=7.5 \n" ); document.write( "x=7.5/.1 \n" ); document.write( "x=75 pounds of $1.20 coffee is used. \n" ); document.write( "Proof: \n" ); document.write( "20+1.20*75=1.10(25+75) \n" ); document.write( "20+90=1.10*100 \n" ); document.write( "110=110\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |