document.write( "Question 167914: A grocer mixes two kinds of nuts. One kind costs $5.00/kg and the other $5.80/kg. How many kilograms of each type are needed to make 40 kg of a blend worth $5.50/kg? \n" ); document.write( "
Algebra.Com's Answer #123767 by checkley77(12844)\"\" \"About 
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5.80x+5.00(20-x)=5.50*20
\n" ); document.write( "5.80x+100-5x=110
\n" ); document.write( ".80x=110-100
\n" ); document.write( ".80x=10
\n" ); document.write( "x=10/.80
\n" ); document.write( "x=12.5 kg. of $8.50 nuts are used.
\n" ); document.write( "20-12.5=7.5 kg. of $5 nuts are used.
\n" ); document.write( "proof:
\n" ); document.write( "5.80*12.5+5*7.5=5.50*20
\n" ); document.write( "72.5+37.5=110
\n" ); document.write( "110=110
\n" ); document.write( "
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