document.write( "Question 231207: How many pounds of Coffee beans selling for $5 a pound should be mixed with 6 pounds of Coffee beans selling for $8 a pound to get a mix selling at $6.80 a pound? \n" ); document.write( "
Algebra.Com's Answer #171190 by checkley77(12844)\"\" \"About 
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6*8+5x=6.8(6+x)
\n" ); document.write( "48+5x=40.8+6.8x
\n" ); document.write( "5x-6.8x=40.8-48
\n" ); document.write( "-1.8x=-7.2
\n" ); document.write( "x=-7.2/-1.8
\n" ); document.write( "x=4 pounds of $5 coffis used.
\n" ); document.write( "Proof:
\n" ); document.write( "6*8+5*4=6.8(6+4)
\n" ); document.write( "48+20=6.8*10
\n" ); document.write( "68=68
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