document.write( "Question 165650: Please help me solve this equation:
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\n" ); 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?
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Algebra.Com's Answer #122111 by checkley77(12844)\"\" \"About 
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
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